A problem that has been driving me nuts. How do I connect my Macbook (connected wirelessly) to my PC (connected through a hub). They both connect through the network.

Basic structure

Modem1 --> Router1 --> PC
Modem1 --> Router1 --> Airport Express --> Macbook

Is it doable?

I'm a recent convert to Macs and a university trained systems analyst (so presume I know nothing!)