Hosting a Torrent file without downloading it

[ReloadPsi]

I've got a file that I was planning on uploading as a torrent. Problem is, the place I was gonna put it on already has it.

What I'm wondering is whether anyone knows how I can make my own copy of the file in question, and get it to work so that people can download it as if it belonged to the same torrent? Is that even possible?

I don't wanna ask on the site in question for fear of being told "ya boo smurf off n00b" and banned.

On a somewhat related note, whenever I do try and seed a torrent, I seem to be unable to upload. Anyone help a brother here?