I just had 2 random crashes while playing the Sims 2. The one where the computer blue screens, and tells you which file did it. It said that is was caused by CLASSPNP.sys.
I did a search and 2 files came up.
C:\WINDOWS\ServicePackFiles\i386
C:\WINDOWS\system32\drivers

Is this crash caused by SP2?, if so
I also had the crash when running a newly installed MS Publisher

Thanks for any help!

Did you do an "upgrade" to SP2?
That does do a lot of unpredictable things since junk gets left behind all over.

Just slip-stream SP2 into your XP, and re-install. It should be fine (that is... IF it was because of SP2).

You might first check if you get more crashes, or whether this was just a one-off case of crashing.