Also, a related question: you suggested to copy Notepad from another XPsp2 computer. Currently, when I try to open Notepad in the System32 directory (all the other ones I can open) I get a message which says: "Files that are required fro Windows to run properly have been replaced by unrecognized version. Tomaintain system stability, Windos must restore the original version of these files. Insert your Windows XP Professional Service Pack 2 CD now."
If I do this, am I going to end up having to reload all of Windows XP Pro, or just the files I need? I don't want to have to start from scratch (which may be why you suggested to get another copy from another XP Pro sp2 computer).