Windows 7 problems with wireless bridge

[Kennyl]

My windows 7 machine is unable to connect to my internet through the wireless bridge I've set up on my WRT54G using DD-WRT. It seems to be connected to the network as it sees the other computers that are on it but there is no internet access. Every once in awhile it gains access and then abruptly loses it in a matter of minutes. The router supplies internet to anything else I plug into it, be it my Xbox or laptop running XP. I'm stumped and can't seem to find the problem. Thank you for any help in advance.

 

[Kennyl]

The router it's connected to is acting as the wireless bridge to the main wireless router in the other part of my house.

 

[Kennyl]

Like I said in my original post its only the Windows 7 machine that seems to have a problem accessing the internet, anything else that's plugged into the router receives internet just fine with no problems.