You seem to be having some problems uploading replays. Check out this link: http://forum.toribash.com/showthread.php?t=52068
It's a little tutorial that should teach you how. If you have any problems at all, feel free to send me a PM (just click my name beside this post and hit "send a private message") and I'll do my best to help you.
Also, merged your double post. Try using the edit button next time, eh? ;)