winsvrc.exe is missing!!! please help!

one of my users can’t open applications like Excel, Word, Correl Word Perfect, Outlook Express. A box comes up saying that is can’t locate winsvrc.exe or it is missing. It asks me to locate it. I can’t even find this file on working machines!!! What do i do if i find it?

Anybody got any ideas? The OS is Win98.
Please, help!!!