I have set up an ad-hoc network between my iphone 4 and my laptop (Windows). I have no internet on the laptop so have been using the 3G on the iphone using handy light. This works fine and I can browse fine with firefox. The problem I have is that other programs which want to use the internet don't work such as iTunes or Babaschess. I have set firefox as the default browser but not helped. Any ideas???? Regards