Hi,I currently have a Linksys BEFW11S4 router. This is a 4 port 10/100 router, with wirelss B. Also, it is connected to my DSL modem via WAN port. I would like to add gigabit, but need to keep the wireless. Would adding a 5 port gigabit switch work? I would guess I would have the DSL, my current 10/100 router, and then a crossover cable to the gigabit switch where the computers are connected via cat5e. Is this correct, or what is the best option?