I agree, ArtSearch is a great thing to have. I've gotten several jobs throgh finding out about them there, especially if you don't mind moving out of state. My school used to have it in the production office, the paper version, and my roomates used to have it online. I find the online version really easy to search through. The first time I got it I got the one year subscription, but had a job within three weeks, so I would opt for the six month version, that way you don't pay for more than you have to.
Another great thing they have is the American Theatre Magazine. It's a great conversation starter, they have parts of new plays, articles, etc., so I feel "in the loop." I can't even count the times I've met people who have had something about them in there, and it's a good way to break the ice. Plus, I just love hearing about what's going on. They offer a studet discount, I think it's $20 for ten issues, which is a great deal.
Hmmm... if this stage management thing doesn't work out maybe I should try to get a job marketing for TCG...