Ok so I have a mini, a mbp and 2 airport extremes (g and n). The only phone outlet is in the basement. I am on the 3rd floor master bedroom and office. Our DSL and airport extreme. i am trying a USB N before i get sesperate and add another Airport N Extreme on the 3rd floor so I can WDS. Can anyone look at my stats and tell me what I am looking at in terms of performance from a USB 802.11n dongle and the main router in the basement?