Net-Server Application?

Hi all, at work we don''t internet addresses, so I cannot check out GameDev, but we do have a computer connected to the internet via modem. I was wondering if there is an application that will let other people, in the INTRAnet get access to the INTERnet, by communicating with the logged on computer... In other worlds, the computer would log on to the internet, via 56k modem, and other computers, via internal net, would connect to that one computer, and request webpages, and stuff... Does this exists, or is it possible? I think so, thanx for any help you guys can give,

[Hugo Ferreira][Positronic Dreams][]