OT: Net Work Advise Sought

[Atrocities]

I am having my Cable modem re-hooked back up for a trial period that I quallified for as a long time customer who cancelled service and I have two PC's that I need to have access to the web via the modem.

One runs Win2k, the primary system, and the other runs Millenium. What will I need to do to run both of these PC's off of only one IP?

I have a D-Link 5 slot hub and cables. No router and no knowledge past that. I am thinking perhpas wireless networking if its cheep enough.

The Mil OS computer is just a back up PC but will be ran from time to time doing back ups and it will need net access.

Any help or advise is welcome and appreciated.

Thanks.