Question : Wireless Internet problem

I have a user with a laptop that runs Windows 7 Professional.  It's worked great for months, but has developed a weird problem within the last two weeks.  He is able to connect to different wireless networks just fine, but isn't able to access the internet.  At work, he can connect to our domain and access all of the domain resources except for the internet.  At home, he is able to access the wireless router, but still no internet.  He used to be able to get to the internet from both places.  Additionally, he is able to get on the internet at both places by using a wired connection.  Has anybody else run into this problem?

Answer : Wireless Internet problem

I appreciate the help, but in the end I wound up wiping the hard drive and doing a reinstall.