wpa

I am using a Toshiba laptop with XPMCE2005. I can connect wirelessly with no
security or with WEP, but it is never assigned an IP address with WPA. My
IPAQ and another computer both signed onto my network.

I have an MN700 base station from Microsoft ( I have also tried a Belkin
base station) and the Intel 2200BG card in the laptop.

MN700 hardware version is 00.00.00.0004 (firmware, etc is up to date per
updater)
2200bg firmware is 4.1.3

Any ideas on the possible problems preventing WPA connections with this
computer?