Can anyone recommend a high quality router that has a strong signal? I've got a d-link 802.11b DI-614+router about 50' away from my computer which has a dlink DLW-520+ , but its trasmitting through a cinderblock wall. Theres a very strong dropoff through the wall, and the number of retransmitted packets is awful. The computer basically loses its wifi signal periodically which makes doing anything over the internet nearly impossible. Any suggestions would be appreciated.