Attempting remote desktop with xp but my remote computer is networked
 

I wanted to access my home computer from work, so I set the remote desktop function. However when I tried it I couldn't connect. It then accurred to me that my remote (home) computer was networked to another computer in my apartment by a switch so we could share DSL. I know this setup is causing all kinds of IP address problems but I don't know how to get aroung them. By the way both computers have XP. HELP