I have a repeatable issue which has escaped a solution from Dell Tech Support or the Windows 7 support forum.  I am using a triple monitor display; two monitors from the 2 dvi outputs from my ATI HD5770 card.  The 3rd display from the mini display port on the same card and a vga adapater cable.   Using my Atheros wireless adapter I get about 10 mbs with only 1 monitor active.  When I enable the 2nd monitor my speed drops to about 7mbs.  When I extend my desktop to the 3rd monitor my speed drops to less than 1mbs.  The card is located next to the video card and cannot be moved.   I have not tried connecting directly to my router as it is in the other end of the house.   I have also tried a Belkin usb wireless adapter with the same result.   Any ideas for possible work-arounds or solutions?