Bloodrift: To post your replays, just follow these instructions.
1.) Click "Go Advanced" next to "Post Quick Reply."
2.) Scroll down to "Additional Options" and click "Manage Attachments" under the "Attach Files" subsection.
3.) Browse your computer to find the replay files. They should be located in your Toribash folder, wherever you installed it to. For instance, mine is in C:/Program Files/Toribash/. I can't say exactly where the "replay" folder is because I don't have it installed on this computer, but I'm sure you'll be able to find it, just look around in the Toribash folder until you find the .rpl files.
Any other questions, let me know.