It is best to stick to one thread. I appreciate that I got the wrong end of the stick on your first one click here
I suggest that you tick that one as "resolved" and we'll stick to this one.
I am assuming that you are using Windows XP. That has its own software for opening compressed files so I don't quite understand the problem. If you think that the file(s) has been moved, have you tried Start, Search to try to find it?
If you can spell out your problem in a bit more detail I'm sure that one of us can help.