Wireless bridge not allowing IP change

[Lord Byron]

We cannot change the IP address on the wireless bridge (gaming adapter). When we enter the default IP of the adapter in a web browser, the computer is unable to connect and open the wifi-based utility. We also tried changing the IP using the set-up software that came on the included CD, but it wouldn't allow us to change the IP to 10.5.38.1, and even when we set it too the default IP (192.168.1.250), we were still unable to access it by that address in our internet browser.

We have:
Reset the bridge multiple times, to no effect.
Followed the manual word by word.
Followed the linksys manual word by word.
Removed all security settings from router, bridge, and laptop.
Tried different IP addresses (various default IPs used by linksys).
Tried different Ethernet cords and power cords.
Tried different computers.
Had different computer technicians from the school look at it. (They merely suggested stuff we had already tried)
and
Tried different internet browsers.

None of this has worked, any ideas? Any help would be very much appreciated.