How do you make your own remote backup server? I want to backup several computers from different locations?

I would like to make some sort of remote backup server so that I can schedule certain computers from different locations backup to a central station. We have a static ip, windows server 2003 and windows small business server 2003 if that helps at all. Does anyone do this themselves or know how to do it? I really don't want to have a service do it, I don't like the idea of our private company files being with someone else. Thanks!

you should be looking fot Acronis True Image Workstation.