Question : logon.exe deleted - need help restoring it

When removing viruses, drweb deleted logon.exe.
Now I cannot boot into windows, it attempts, but kicks me back to the logon screen shortly after displaying the desktop background. ( before the virus was removed, I was able to get into and use windows ( with limited functionallity. )

My question is how can you repair/replace logon.exe (system32 folder)
I think I have to insert the winxp cd ( which i have ) and run a command to extact the file from the cd to the system32 folder, but I cannot remember the command,, anyone ? this should be fairly easy but ill give 500 newayz

Thanks in advance

Answer : logon.exe deleted - need help restoring it

A repair of windows would probably do it :)
http://michaelstevenstech.com/XPrepairinstall.htm

What virus was removed?