Registry errors:  Primary references like "StartMenu" "Desktop" "Programs" reference missing files.

I'm using Windows XP SP2 on my laptop.  I was having problems with very slow startup and couldn't find the problem.  I bought Fix-It and ran the registry fixit program, finding that numerous files had gotten unassociated from registry references.  I was able to fix all of them except the ones below.  I was afraid to change them because I didn't understand them well enough.  My computer is running MUCH better now, and the only obvious problem is that whenever I start my computer (and perhaps at other times as well, I'm not sure) I get the following error window popup.

SERVER BUSY
This action cannot be completed because the other program is busy.  Choose Switch To to activate the busy program and correct the problem.

When I choose Switch To the Start Menu pops up.
*******************************************************************************************
The only Event Viewer errors are:
(A)
Event Type:      Error
Event Source:      Application Error
Event Category:      (100)
Event ID:      1004
Date:            2/5/2008
Time:            1:43:39 AM
User:            N/A
Computer:      DUSTYFOOT
Description:
Faulting application svchost.exe, version 5.1.2600.2180, faulting module unknown, version 0.0.0.0, fault address 0x00a02981.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 70 70 6c 69 63 61 74   Applicat
0008: 69 6f 6e 20 46 61 69 6c   ion Fail
0010: 75 72 65 20 20 73 76 63   ure  svc
0018: 68 6f 73 74 2e 65 78 65   host.exe
0020: 20 35 2e 31 2e 32 36 30    5.1.260
0028: 30 2e 32 31 38 30 20 69   0.2180 i
0030: 6e 20 75 6e 6b 6e 6f 77   n unknow
0038: 6e 20 30 2e 30 2e 30 2e   n 0.0.0.
0040: 30 20 61 74 20 6f 66 66   0 at off
0048: 73 65 74 20 30 30 61 30   set 00a0
0050: 32 39 38 31               2981    

and (B)

Event Type:      Error
Event Source:      Application Error
Event Category:      None
Event ID:      1001
Date:            2/5/2008
Time:            1:45:41 AM
User:            N/A
Computer:      DUSTYFOOT
Description:
Fault bucket 05590719.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 42 75 63 6b 65 74 3a 20   Bucket:
0008: 30 35 35 39 30 37 31 39   05590719
0010: 0d 0a                     ..      
**********************************************************************************
The Fix-It program gives the following details for the registry errors:

Problem:
The registry item Programs references the missing file Programs.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \Start Menu \Programs

Problem:
The registry item Startup references the missing file Startup.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \Start Menu \Programs \Startup

Problem:
The registry item Desktop references the missing file Desktop.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \Desktop

Problem:
The registry item Directory references the missing file Directory.
Key Path:  
HKEY_USERS \& \Microsoft \Windows \CurrentVersion \Internet Settings \Url History
File Path:
C: \WINDOWS \History

Problem:
The registry item Favorites references the missing file Favorites.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \Favorites

Problem:
The registry item NetHood references the missing file NetHood.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \NetHood

Problem:
The registry item NetHood references the missing file NetHood.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \LocalService \NetHood

Problem:
The registry item Personal references the missing file Personal.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \My Documents

Problem:
The registry item Personal references the missing file Personal.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \LocalService \My Documents

Problem:
The registry item PrintHood references the missing file PrintHood.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \PrintHood

Problem:
The registry item PrintHood references the missing file PrintHood.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \LocalService \PrintHood

Problem:
The registry item SendTo references the missing file SendTo.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \SendTo

Problem:
The registry item SendTo references the missing file SendTo.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \LocalService \SendTo

Problem:
The registry item Start Menu references the missing file Start Menu.
Key Path:  
HKEY_USERS \S-1-5-20 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \NetworkService \StartMenu

Problem:
The registry item Startup references the missing file Startup.
Key Path:  
HKEY_USERS \S-1-5-19 \Software \Microsoft \Windows \CurrentVersion \Explorer \Shell Folders
File Path:
C: \Documents and Settings \LocalService \StartMenu \Programs \Startup
**************************************************************************************
The choices Fix-It offers for reassociated the references are all something like this example for the StartMenu error:

C:\WINDOWS\System32\config\systemprofile\StartMenu
C:\Documents and Settings \LocalService \StartMenu
C:\Documents and Settings \carol \StartMenu
C:\Documents and Settings \AllUsers \StartMenu
C:\Documents and Settings \Administrator \StartMenu
C:\Documents and Settings \DefaultUser \StartMenu

****************************************************************************
MY QUESTION is this:
It looks like all the registry errors are the same sort of thing.  Which option should they be relinked to?  Administrator, All Users, DefaultUser, LocalService, or my login account "Carol"?  Also, for the registry errors (per Fix-It) that have both LocalService and NetworkService versions, should those be relinked to different files?

One quirk:  I reassociated my "My Documents" with a D: drive version of D: \Documents and Settings \ carol.  This was done years ago when I first got this laptop.  I haven't had any problems with that, although I did notice that some items got dropped into C: \Documents and Settings \carol over the years, but not enough that I cared.  The D: drive option is not available in the Fix-It drop downs.

Thanks,
Carol