I'm sitting in an econ class in a uni building and hopped onto some chem lab group's wireless router. There's no pw or anything. What I want to know is, how safe is this connection? In the very rare occasion that there is a kid who knows how to hop onto other computers on an unsecured router, could he get into mine?

The reason I'm asking is I'd like to start playing some bodog poker in class. I'm 95% sure there's no problem, but I'm just curious if someone could get my info, etc.