MSCONFIG Tool: Troubleshooting problems on Windows XP

I was seeing some strange problems with my Windows XP machine.  “My Computer” would hang for approximately 2 minutes before displaying the list of drives and “Send To” would not enumerate the items to send to (it would also cause explorer to hang for a while).  This started only a couple of days ago and I could not determine what had changed to start causing the problems.  Searching Microsoft's website for answers, I came across the MSCONFIG tool:
http://support.microsoft.com/default.aspx?scid=kb;en-us;310560

This tool will let you set how to startup your machine.  Very nice and easy way to diagnose problems on yourWindows XP machine. 

Eventually I narrowed the problem down to the Windows Image Acquisition (WIA) Service by using the MSCONFIG tool.