Start up error popup
 

Whenever I start up my computer I get a
"Windows cannot find C:\WINDOWS\System32\System32.exe"
I think it is somehow link to the windows media player, because when ever i try to playa video clip using it i get a similiar message at the bottom of my screen.
Could Anyone PLEASE Help..
Thank You

This is caused because of an incomplete removal of the W32.KWBot.C.Worm virus from your computer.

Here is Microsoft Knowledge Base article to fix this problem.
You receive a "Cannot find C:\Windows\System32\System32.exe" warning message when you start Windows XP - Article 833767

A cheap way around this (not efficient) is to simply add a useless file with notepad or some other basic program called System32.exe in the specified folder.
This error occurs when a few viruses which have attatched themselves to your startup in a hidden manor are trying to load and the infections have been removed.

A more proper removal can be done in the registry, under the path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Run registry subkey
or something similar (this is what was the path on my roomates comp)
and delete any key named: Explorer.exe C:\Windows\system32\system32.exe or cmd.exe or cmd32.exe
this should remove the call to launch this file.