Yes, coWPAtty has the abilty to use rainbow tables and at least one or two other cracking progs in BT3 can too. In fact im pretty sure it was Thorn (a honest to goodness internet celebrity! ) who came up with the idea of cracking WPAs with rainbow tables. There is also a repository on the internet of WPA rainbow tables for the top 1000 Essids out there.
unfortunately it weighs in at a hefty 34gigs.