An xp pro dial up network

Ok Guys/Gals, Here’s the deal. I’ve had the Rhode Island State Police at my door because I sent 900 million emails in 1999. I’m ashamed because I’m not sure how do I allow my uncle and a few other friends dial up to my PC on a dedicated 2nd phone line in order to connect to my broadband internet??
Any tricks to cofiguring a dial up server with XP Pro?