How to access sharepoint site from the Internet

Hi,

I run SBS 2003 and I recently installed WSS 3.0 parralel to WSS 2.0. "companyweb" the internal site, still responds to http://remote.myserver.com:444

I try to find out a way to make the new site I created using WSS 3.0 respond on the requests from the Internet. The new site is listening to port 80 and I can access it (internally) by typing http://mynewsite

Thanks for any pointers you can provide