Ad Hoc Connection with Windows Vista

Ok I know that this question has been asked many times over, however I am having trouble finding anything that is similar to my setup. So here we go. I have a laptop that is connected directly to the internet. I am trying to get my iTouch connected to the internet through the ad hoc connection that I have setup. I was able to get it connected for a short amount of time once, but haven't been able to get it connected since. I am not too savy to this whole networking so that is why I am here. Most of the threads I have read are a hard to understand for me. If anyone can help me out I would be greatly appreciated.

16 GB iTouch
Toshiba Satellite
Windows Vista