Dreamcast internet connection on your Windows

Has anyone tried to setup their computer as a dial-in server for Dreamcast? I've heard somewhere it is possible on Linux... but how about for Windows. I don't feel like paying for stupid ISP when i have a broadband connection already.

[bloo]

www.microsoft.com
knowledgebase search

or just setup w2k pro/server
settings/dialup-network connection/make new connection/accept incoming connections

more than enough info