Backtrack5 r3 on a bootable dvd with reaver.
If I remember correctly from years ago you attack the pin number of the router and get the wpa2 keys once inside.
Unfortunately most routers now only allow x attempts getting in with the pin number before they really lock up and the owner has to hard reset which would be suspicious.
Don't tease me with powervu I still can't get it to work with my s929acm receiver.
I never got reaver to work so your mileage may vary.