Yea, there are very few poker rooms that work on Macs :cry:
http://www.mac-poker.net lists two of the major ones that do, which have worked out great for me. Down the road I'm hoping more poker rooms will see the Mac market for what is really and make their software compliant.
Oh, and I forgot to mention - if you do join Pacific, check out the "Mac Users" freeroll tourney that happens every week... I play when I can, its alot of fun and as friendly a tourney as you will find out there (aka lots of playful trash talk and joking around) :lol: