I have a DLink 524 router but my wireless reception is awful on my new macbook pro. Not even 15 ft away and I get one bar. It will cycle though all the way to full and back down again. Its constantly changing. But typically I get only one. So could I buy an airport express and use it as an access point? Or will it also have trouble finding a signal? My desktop PC is wired to the DSL. Is there a way to set up the express with the mac and then wire it to the PC, thus eliminating the DLink?