This page is where all files must be uploaded to.
To upload a file to this page simply click the "file" button at the bottom of the page.
Once you've done this you'll see a list of all the current files that have been loaded. you simply need to click on the "upload new file" button at the bottom left, and then enter the pertinent information for your file.
Once you've done this and the upload has completed you can link it to the forums, if you aren't sure how to do that refer to the F.A.Q section of the forums.