I want to set up a 6 year old Dell in my bedroom via USB wireless adapter. The main PC is hardwired to internet connection then has a wireless D-Link router for 2 laptops. I am seeing USB wireless adapters any where from 14.00 to 60.00, I don't know which to get. I want the best internet connection possible. The main PC will be about 12feet from the one I am trying to set up. Would appreciate any info. Thanks