Hi Elizabeth ... I know this is a big forum and finding your way around is a nightmare for many newcomers, although, you have been around a couple of months.
In your thread "Wrong File", Lord of the Rings gave you this link
http://www.gnutellaforums.com/showth...&highlight=avi
If you follow that link, go to the first three posts by Lord of the Rings in that thread , and follow those links you will, I promise, find lots of useful information.
(The links are underlined, and you click on them, when you've read the page press your back button to return to the page with the links on)
I think your questions were answered in that thread