This hat has a brim that's knit sideways around the hat. So every time you knit over to the main body of the hat, you knit two sts together, one from the brim and one from the main body of the hat (one of the 80sts). I forget if that's at the end of row 1 or at the beginning of row 2. but that way, the brim grows long enough to reach around the hat at the same time that you're attaching it to body of the hat.
This has come up in the past and the previous advice may help you. http://www.knittinghelp.com/forum/sh...d.php?t=104056