Hi there can you provide more details? As far as opening Internet explorer
does it not open at all? or does it open but you can't browse any web sites.
While connected go to the dos prompt - start run ( or search if you have windows 7)
you should have a black command window up on the screen
type: ping 4.2.2.2 ( you should get replies)
if so also try : ping google.com ( you should get replies)
also type ipconfig and note the ip addressses
let us know the results.