Dark0ne: I'm a little confused by your problem. I use 3G mobile broadband myself and it works like a proper internet connection for me. I installed Skyrim and activated it through Steam for a very small amount of mobile credit cost. Once done I put Steam into offline mode and I never have to go on the net until I want to download an update etc. Of course go into individual games settings and make sure you select do not update this game automatically. If your are installing all your Steam games again that would be rather expensive via Mobile broadband and any online games like Eve will eat your credit in minutes. My solution was to take an external drive around to a friends house, install Steam to the drive and all my games. When you take the drive back home Steam will want you to verify your password/username etc, they send a verification code to your email. Once you've confirmed that, you can go into offline mode no problem. Steam is annoying I know but its an evil I put up with. ;)