Keep in mind this is how I do it, if you have questions please do ask. 1. Obviously save the replay under a specific name
2. Go to mediafire.
3. Upload (with or without account doesn't matter)
4. Once you are ready to start uploading, go to browse.
5. In browse, click desktop
6. Click on computer
7. Go to your OS hard drive file.
8. Click on programfiles
9. There should be a folder sating warcraft3
10. click on it and find a folder saying "replay".
11. there ya go, this is how I do it usually.