MIssing my network controller driver after re-installed windows 7

Hi, I hope someone can find a solution to this problem, I have to re-installed windows 7 on my DELL Xps 17 due to a problem with Mcafee Software. Thinking that I would resolve one problem I end up with another one bigger than the first one, so know I am missing my network controller driver which I can not find any ware. That is the only drive that I need for my wireless to work, and I am going a bit mad here try to find a solution, Any help will be greatly appreciated.

Thanks