Forced system shutdown

I have a number processes listed as running. And like usual its hard to tell which processes belong to which program. As far as I know in XP pro, only two of those processes are critical, the rest should be able to be shut down and yet windows still run. But apparently shutting down one or more of these processes causes a pop up that shuts down your computer in 60 seconds.

The first time it happened was when I was in display properties and the box went buggy, I tried to close it and a pop up told me that it was no longer responding, would I like to close it. I said yes and the 60 second close down box came up.

Second time it happened was when i was trying to follow the suggested instructions for a different issue, he wanted me to rename some folders. When i tried it told me I couldn't because a file in it was in use. I started shutting down processes to allow a renaming.

Just recently I started shutting down processes just to see which one triggered it and managed to get a screen shot before the 60 seconds was up (it was real close though, fumbling with ms paint and save paths)

I got a number of processes all called svchost.exe running. What triggered it was shutting down one of those svchosts (not any one of them, the first 4 or 5 or so shut down fine without triggering it)

The message is:
This system is shutting down. Please save all work in progress and log off. Any unsaved changes will be lost. This shutdown was initiated by NT AUTHORITY\SYSTEM

Time before shutdown: (starts out at 60 seconds and counts down)

Message
Windows must now restart because the Remote Procedure Call (RCP) service terminated unexpectedly.

I have a screen shot if anyone wants to see it and can tell me of a way to attach images to cnet posts or another way for me to send it to you.