Act now or miss out! The open submission is only open from Aug. 1st to November 1st 2007. You need a cover letter and a contributor’s note (where else you’ve published, if applicable). I would say you should submit only if you’ve published somewhere, anywhere, at least once before. Even on the internet.
Here is the mailing address, and I wish you the best of luck:
1840 South 1300 East
Salt Lake City, UT 84105