I have many files on my system (windows xp) that I can't open. The icon for these files is what looks like a pieces of paper with a picture of a windows window on it. they are in file formats like .man and .tar.gz etc. Many of these files are things I have personally downloaded (the *.tar.gz is what should have been a PERL compiler. The message I get when I open (or try to) one of these files is - "Windows cannot access the specified device, path or file. You may not have the appropriate permissions to access them". The account that I use on my PC is defined as an administrator account (not a guest account).
can someone tell me what is going on here and how I can remedy it?

Thanx