1. AOL BB is it connected via USB or ethernet? if USB then you can get a network card for both and use a crossover cable, and setup network with wizard, but the one connected to the internet must be on for the other one to access the internet.
2. if it is ethernet then you can use the above method or buy a router and network them together which wouldn't require one pc on to access internet. You would need a network adapter on both pcs, a router and 2 rj45 cat5 cables.