Networking :: Wired & Wireless at the Same Time?

Dell Inspiron 7000 laptop PII 266MMX 64RAM HD Install

I have 2 different networks in my house. One is wired and one is wireless. I can get internet access from either one, but I can access different computers with both networks.

When I setup the wired network it replaces my wireless connection, and vice versa.

Does anyone out there have 2 networks running? Any help would be appreciated.

original here.