I dont know why no one wrote this one up. Its very simple. UPDATE: I'll leave the stuff below for posterity, but there is a new and better way to do wifi tethering. The folks at xda found a way to enable the Mobile AP part of Galaxy S and port it to the Vibrant. Enjoy Mobile AP App Fixed to Work on Samsung Vibrant | xda-developers 1. Root your phone 2. Google search: Android wifi tether 3. Should be the first link for android-wifi-tether - Project Hosting on Google Code 4. On the side in the green box is Featured Downloads. Select the latest version, at this point in time its ver 2.0.5-pre8 5. Download and install 6. Run app, it will ask for SU permissions when you start and stop tether. Notes: Encryption works and just for kicks I would say turn on Access Control(MAC filter). Not the best speed, but then I'm in my workplace and signal is a bit low.