Novell 4.91 XP SP2 Wireless

Installing new Dell laptop with XP SP2 preinstalled. Other laptops no problem. Install install of client could not find tree. Changes to custom install and installed IPX and IP. Changed nwlink ipx/spx netbios ctp adapter to 802.2 and connected. I have several wiresless access points due to concrete and steel construction. At one point I was able to find tree and connect then I lost it. I believe I picked up a distant and weaker access point. We I selected the stronger access point in the same room I can no longer find tree or server to logon. Reinstalled client to no avail. No matter what I try I can’t connect with new laptop. Another laptop side by side has no problems (XP SP1). Any suggextions? wnfd24@yahoo.com