I just purchased dgl 4500. We have out isp router (dsl) coming into the room with the xbox, the computer is in another part of the house using a dlink receiver for wireless. we were using linksy and it worked but son had lots of lag on computer when he plays WOW. So, we thought DGL 4500 would solve this. We hooked it up to the dsl modem and to the xbox, I put the software in the computer . the computer finds the dlink but when I run the set up it doesnt find a connection. the xbox doesnt work either. Help please