Information Store won't start after IIS reinstall

Here's the situation:

Win2k3 SBS Server running Exchange and IIS.  Someone uninstalled, reinstalled IIS and now Exchange won't start.  I tried to start the Information Store service and Routing Engine service, but get the following errors:

IS:
"Windows could not start the Microsoft Information Store on Local Computer.  For more information, review the System Event Log. If this is a non-Microsoft service . . . [etc.]"

RE:
"Could not start the Microsoft Exchange Routing Engine service on Local Computer.  Error 1083: The executable program that this service is ocnfigured to run does not implement the service."

I can post the Event Log entries if that would be helpful.  I am hoping there is a fairly simple fix for this, but I don't use Exchange much, so I'm in over my head.
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humeniukAsked:
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MaharajkpCommented:
If you have reinstalled IIS
Reinstall Exchange as well ... Make sure you select ... Reinstall ... Component

It is something like MSOffice Reinstall ... just binaries ...
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MaharajkpCommented:
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humeniukAuthor Commented:
Thanks for the fast response, Maharajkp.  I'll give it a try.
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humeniukAuthor Commented:
I took a look and saw that  SMTP wasn't reinstalled with IIS, so I installed it.  After this, I was able to start the Information Store and access the mailboxes.  However, I can't send or receive email.  Does that give you any other ideas or should I go ahead with the reinstall?
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Exchange_AdminCommented:
Yes go ahead and reinstall Exchange.
When Exchange is installed, modifications are made to SMTP.
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humeniukAuthor Commented:
Thanks for the help, everything is working again.  The culprit has been (verbally) beaten and I'm going to look like a hero in the morning when everyone has email again  :)
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