Windows XP Login Error

Running Windows XP Home Edition.

Had a game of Battlefield 1942 freeze on me Friday night.
Decided to reboot the computer to give it a fresh start.
As it is loading windows I get an error pop up.

Title: winlogin.exe - Entry Point Not Found
Message: The procedure entry point IsRadStringPtrA could
not be located in the dynamic link library KERNEL32.dll.


I then hit OK and I get another pop up.

Title: User Interface Failure
Message: The Logon User Interface DLL msgina.dll failed to
load. Contact your system administrator to replace the
DLL, or restore the original DLL.

The only button for this popup is to restart.


I haven't been able to find any info on the error through
the microsoft knowledge base or google yet. Also logging
into SAFEMODE gives me the exact same error popups.

Any suggestions on how to fix the computer other than
formatting and reloading everything?