I use my s2 to tether for internet (shhh) and it works fine on my pc. I installed the drivers and kies air. However, my bf cannot get it to work on his pc. We both use Windows 7 pro. Drivers are installed on his pc. I am at a loss. I know I had an issue getting it to work with mine and this forum helped a great deal. Hopefully, someone can help us solve this mystery. Thanks.