Unlike the other people saying don't get a powerful green laser for star pointing I say rubbish!!! If you want to blow Alderaan to hell with a Death Star like beam then by golly, you should! I used to star point with my Titanium Jetlaser 250mW green laser and it was great! It's like a solid beam piercing the night.
Of course, I wasn't doing serious star pointing, just out away from the city with my girlfriend. At one time there were some astronomy folks taking pics of the andromeda galaxy (if I remember right) and they politely asked me not to shine it that night so I turned it off no problem. No matter what you decide, always remember that other people matter, and just because you CAN shine a laser doesn't always mean you should. The less people us laser hobbyists piss off, the less people who will be out to create highly limiting legislation.
Welcome to LPF! Glad to have you!
Peace,
Isaac