I need help from anyone here with experience in wireless networking. A couple of my machines are not getting a good signal from my wireless router (even though I have recently upgraded to a better model). Does anyone here know if wireless cards fitted in desktops get better reception than the USB attached wireless adaptors (the ones that look like flash memory sticks). In other words does the little antenna on the card work better, even though it is behind the machine and the usb adapter is on a short cable that allows some flexibility in placement?