Making your own website for the project may be the best way to go, if you're really serious about it, especially with finding help. There, you can show what you've done, what you're capable of, what you plan to do, and so forth.
However, don't expect people to just magically show up at your website. You'll have to promote it in some way. The thing I'd do is make a site all about the project, then figure out where to post at.
You're going to need a real website, too. Not a myspace page or something like that.
If you're looking for serious help, some sort of game development forum may be your best bet. Most of the people there will probably be busy with their own projects, but you may snag someone that is impressed with what you're doing and wants to be a part of it.