Incorrect, you need to supply a link. Try googling minecraftworldfile.com... I think that is what it is called. Etho does his on there.
Ok to clear things up, 1. Get your submission out of your minecraft saves and put it on your desktop. 2. Download winrar. (Got it skip this step) 3. Make a new winrar archive (same way you make a new folder) 4. Put your wold inside of it. 5. Goto media fire (free) 6. Upload your world.
Not really that exact. The folder itself is not called %APPDATA% not in windows 98 at least. But %appdata% might work when executing via the start menu, so that's good too