Ok so I have this 2WIRE wireless dsl router that I'm connecting my comp to. I use a D-link AirePlus G Wireless Utility to connect with it. MAC Adress 00:11:95

5:BA:16 Utility Version V1.02 Driver Version 3.00.22.
So the 2WIRE router is connected to 2 other computers using a wire and they work just fine. But my computer that connects to it via the D-link wireless adapter works, but then after a minute or so it says it's unconnected and stops working. Then after a short while it works again. This is VERY VERY annoying, furthermore the connection is slow too. Is there anyway to fix this? Thanks in advance.
I think it isn't a problem with the router because the other computers work just fine without the constantly turning on and off. I used to have another 2WIRE router with wireless internet and it worked fine untill it broke via an accident.