Dialing up to a Windows machine

Hello! I have two machines one running Windows XP which is hooked up to my ADSL line and the other is my Linux machine. I want to be able to dial-up to my Windows machine from my Linux one and be able to use the internet. I would like to do this because it would allow me not to have a dial-up account and wheni travel etc i will be able to dial into my windows computer. If this is possible could you please explain to me how this is done?
Thanks in advance!

You'd probably want to check with Microsoft's website, or a Windows forum, since this is a Win config question.