I've been working on a server side "promotion assistant," but I decided that I would stop short of auto submitting for a variety of reasons.
One being that I've been hired to write scripts that block auto submissions, and I think I would feel a bit hypocritical writing an auto submitter.
(Is that the ethical equivalent to selling arms to both sides in a war?)
Anyway, i think you will find something like this useful...
Http Navigator
Good luck.