Here is the situation, have a Dr. Office, the physcians see the patients with their laptops. In the wire room is a Cisco/Linksys EA4500 Router. This is located in the corner of a rectangle shape in the patient area. In the center of this is an area with lead lined walls where a xray machine used to be. My problem is when I set the wireless up gor them. he patients rooms are located all around this rectangle area and due to the lead,certain areas were dead.

I then added AP's on bothe sides to accomodate the dead areas. one AP SSID is "Name" and the other is "Name1". I was hoping this would eliminate any conflicts. All was good with XP but now with Win 7 & 8 I am running into problems. What range extender would be the best to use for the Router sso I can use it's wireless and eliminate the other SSID's? TIA