No - she actually DID lose the programs after installing SP2 - she said she had to copy them from a collegue's computer to put them back on. Not trying to be a smart @$$ or insulting, I just didn't want people getting the wrong idea.

The calc.chm file is the help index file for the calculator. It needs to go in C:\WINDOWS\Help and will be found there on any Windows XP computer, and you will also need the calc.hlp file in that same folder, if you want to do the file replacement, like you did before. After doing that, you can try to put the check back in the Add/Remove Windows Components checkbox to get it to re-recognize calculator, if you want, like you did for Sound Recorder. You may get two calculator shortcuts if you do this, though, like one in your Start Menu, the other in the All Users one. If that happens, just go to C:\Documents and Settings\your user name\Start Menu\Programs\Accessories and delete that calculator shortcut. The other will remain because it's in the All Users start menu. Good luck.