"ExecuteStartProcess" box appears

This sounds like an issue with some C#-based software you have installed on your computer.
Can you post the relevant error from your Application/System log in Event Viewer (start, run, type eventvwr <hit enter>)
Just check the error with the time you logged in.

Hit START, no RUN to click on when the window opens.  

Got in and there were no errors found.  Below are 4 lines in the service manager that started with start of log-in to the point of where the 'ExecuteStartProcess' box came up.
8:54 - the IMAPI CD-Burning Service service was successfully sent a start control
8:54 - the IMAPI CD-Burning COM Service service entered the running state
8:55 - the IMAPI CD-Burning COM Service service entered the stopped state
8:56 - the DSproct Service was successfully sent a start control

Do you use third-party CD/DVD burning software?

You shouldn't need DSproct - it is part of the software provided by Dell - is this a Dell computer?

Anyway - to see if this is the cause - open regedit (you can make the Run item appear on the start menu, by r-clicking the taskbar, select Properties, Start Menu tab, Customize, Advanced tab, and select "Run command".
Click OK all the way out)
Regedit - start, run, type regedit <hit enter>

Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DSproct

Make sure that the Start value is set to "4" (no quotes)

Restart - see if you get the error again.

I have a Dell.  Got into DSproct and came up with the following choices.  A little nervous in registry work so I didn't change anything yet.
   Opened DSproct and got this:
       Enum
            Default
            0
            Count
            Nextinstance
       Security
             Default
             Security

In the Services registry location you should see a DSproct key - and in the right-hand pane - with DSproct highlighted in the left pane - you should see a "Start" DWORD.
Make sure the value is set to 4.

If you cannot see this - please upload a screenshot with DSproct highlighted in regedit.

I changed it from 3 to 4, rebooted, rechecked it and it was still 4.  Did not get rid of the box on login.

Okay - so this is not the problem.
Revert the changes you made to the original "3".

Try setting the IMAPI CD-Burning service to Disabled (make sure you are logged on as an administrative user):

Start, run type:

cmd <hit enter>
In the command window, type:
net stop ImapiService <hit enter>
sc.exe config ImapiService start= disabled <hit enter>

Restart - does the error still appear?

error still appears.

This error could be down to a number of different things.

Have you tried creating a new local user - does the error appear then?

I created new user - error is still there.

Could you try opening msconfig, and de-selecting all non-Microsoft services, then take out any startup programs you have in the "startup" tab - then click OK, and restart - do you still get the error appear then?

Did that and the error did not appear and that user site loaded very fast.

Okay - try re-enabling all the non-Microsoft services.
Restart - if the error doesn't appear - then one by one, select each startup item (in the Startup tab), and restart after enabling each one.
If the error does appear after enabling the non-microsoft services - enable those one-by-one.

You should be able to find the troublesome service.

The culprit is in MSCONFIG/STARTUP tab
It is "OFFICE CALENDAR SERVER,  C:\progra~1\Office~1\Office~1.exe,  common startup"
Office Calendar is sharing software for MS Outlook.  
We are sharing a PC and a laptop via wireless router - PC wired, Laptop wireless.
Is this something that you can continue to help me with or am I calling Office Calendar people???

As this is part of Office - can you try a repair install of the app?
You haven't stated your version - so I suggest, go to Start, Run, type appwiz.cpl <hit enter>
Scroll down to Microsoft Office 200x ... Edition
Click Change, then in the wizard, click on Repair.
Follow the wizard through - restart the computer, does that help at all?

Didn't work.

So - I take it, if you uninstall Office - the problem goes away?
If so - can you try a reinstall?

This service looks to be used to share calendars between Outlook users.
Do you get this problem on another computer - or just this one?

"OFFICE CALENDAR"  is a 3rd party calendar sharing program that integrates with MS OFFICE OUTLOOK so we can share our calendar entries between computers.  It has other functions, but this is the prime use for us.  
I did some experimenting last nite with user log-ins from the PC (server computer).   Rebooted and logged in from user 2 first (User 1 is the admin with complete functionality.  Other users are just for internet use) and then with users 1 and 3 after.    Error only came up on the second two logins.  Same results logging it to 3 first and then 1 and 2 and of course 1 first and the 2 and 3.  
This program is to be operational only in user 1 and it does work that way.  But it appears that it is looking for or trying to load into each user upon login.   Didn't even think about this until you had me do the exercise with MSCONFIG - and it's this OFFICE CALENDAR program that the result  pointed to.  Apologies if I mislead you about this belonging to MIcorsoft Office Outlook Calendar.

After more research - I found this was a third-party app (as you said).
Take a look at these startup locations in the registry:

http://www.windowsnetworking.com/kbase/WindowsTips/WindowsXP/AdminTips/Miscellaneous/WindowsProgramStartupLocations.html

Check that individual users, rather than HKLM are selected - as the latter means the program will run for all users...

I have a very limited understanding of registry, so here's what I did, but I can't link any of this to what you are looking for.  I located the web site and printed the page.  Went to regedit and scanned thru all the keys that were on the web list.  I looked at all the HKLM (HKEY_LOCAL_MACHINE?) keys and they had "values not set".  Then I went to the HKSU (HKEY_LOCAL_USER?) keys which were also "values not set".  Some of each were listings of various applications - didn't mean anything to me.
Hope this helps.

Did you get my last response???

Yes I did, apologies for not getting back sooner - have you tried a clean boot?
http://support.microsoft.com/kb/310353
http://support.microsoft.com/kb/316434
That should isolate whether this is a third-party or Microsoft software issue.

I learned some great troubleshooting techinques - thanx for all your time and efforts.

Apologies for not providing a full solution.
Thank you in any case.