First off what type of internet connection are you using? Second are you using just a straight serial cable or null modem??? Third if your using a high speed why not get an ethernet card for the 1200 (PCMCIA if its not towered).
Anyways here you go -- on the Windows (assuming thats whats on the PC) goto add/Remove programs. Goto system components click on the windows setup tab and select communications. In commuications select direct cable connection and install. That should work for your connection there.
