Might this help?
HP iPAQ Pocket PC h5400/h5500 Series WLAN Driver Update
version 3.2.4.129 (7 Jan 04)
http://h18000.www1.hp.com/support/fi...oad/20019.html
o LEAP user interface now integrated into Microsoft WLAN user interface.
o Provides LEAP support for those customers accessing Cisco LEAP enabled Network.
o Improves connectivity.
o Improves roaming ability.