Lifting after WLS

I had banded RNY on 11/29/05 and have lost 42 lbs in four weeks. Yeah! I joined a gym last week and have been doing the elliptical and treadmill for aerobics. I'm really anxious to get on the weights though I don't remember how long I'm supposed to wait after surgery to start lifting. I definitely don't want a hernia! Any advice on how long I should wait or any muscle building excercises I can do now?

Hey Brian, Do not have anything that Earl did not cover (He is a good man, and knows his ****). I just want to welcome you here! Mike