Local Area Connection doesn't have a valid IP configuration

Here is some information about my netbook. I am trying to share my netbook's internet connection for my desktop. I have a Linksys broadband 54mbps router WRt54G 2.4ghz router.

Whenever I try to share, it says no Internet access, so I diagnose, and it always says Local Area Connection doesn't have a valid IP configuration.

Also, internet sharing works when I use my mom's laptop which is running Ubuntu. Go Ubuntu! lol.

Might try installing Ubuntu on this netbook.

 

Forgot to include my netbook's IP info. Apparently you can't include the same attachment in multiple threads, so I'll link you to the other thread.

http://forums.majorgeeks.com/showthread.php?t=219932