linux in a pc network

[Katrin Koumpikova]

Hi, I've recently installed RH 7.2 on my machine at home. I have one more computer which is Windows based. Both computers see each other when I use ping. How can I configure my Linux machine to access the Internet thorough my other PC (using the LAN I have established). The PC is connecting to the I-net using dial-up.     Thanks, Katrin