Yep, it's in it's own thread.
The yarn gauge you mentioned seems to be a very bulky yarn. What is the name of it? You're going to have a very hard time finding a pattern for a dress in that weight yarn. This pattern that was posted already is in bulky weight, but not quite as bulky as you've got. You might be able to knit it in a smaller size and have it fit.
It is knit on circular needles though. You really should learn because once you knit on them you'll never want to seam again.
Anyway, if I see anymore I'll post them.
ETA: if you can get a less bulky yarn.. maybe worsted or DK here's a few cute tank dresses.