Error in Explorer.exe

Sometimes this error just pops up other times it will pop up when a new start menu item is present with %^#@*& (nonsense) and I move my mouse over top.

Explorer.exe Application error

The instruction at "0x71140551" referrenced memory at "0x4c8b00c ". The memory could not be "read ".

OK to terminate
CANCEL to debug

After this happens alot of my programs are turned off, so I just reboot. (not a bad idea anyway)

Allot of you will probably tell me to just reinstall win2k, but it happens at most once a week. With my machine running most of that time this hasn't been much of a problem. Just was curious if anyone has had a problem like this and has a fix for it.

In advance, no I don't know if the memory addresses are the same every time, last minute decision to up this problem.

Thx, in advance