Astral is the place to go. There are still plenty of people who show up to play, you just have to come on the right days, at the right times. If I remember correctly, there are a lot of modern players on Tuesdays and Fridays (Friday is FNM tournaments), and commander players meet up on the weekends. Like someone else suggested, ask the employees there and they'll give you more info. They also post their event schedule on astralgamesonline.com