i installed windows vista recently on my dell m90 laptop, everything works great, except when I tried to use internet explorer with the wireless network card, the site(i.e, msn.com) could not be open. but when i plugged in the ethernet cable, a site will show up. I have other laptop with the same wireless, and it doesn't any problem. i installed firefox to see if i can browse any website, and it does the same thing. it finds the site according to the status within internet explorer or firefox, but it doesn't display the page. but when i use the ethernet cable, it works. any ideas will be greatly appreciated.

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