First I'd like to know the location of the DLLcache folder on the C: drive for windows XP. C:\windows\system32 it is not there and I have show system/hidden files and filders turned on as well.

Second, I'm having lots of computers getting explorer.exe is crashing due to NTDLL.DLL I did reasearch and traced it to a bad Security update. The fix is to replace the current NTdll.DLL with the one on the WinXP cd. Is there and easy way to do this?