If i but a pcmcia adapter and a pcmcia wireless 802.11g card, will it work with an ipaq 5150. (do you know of any ppc 2003 compatable cf or pcmcia 802.11g cards?)
No it will not work. All "G" cards are CardBus cards, and no PocketPC supports CardBus. Best you can do is a 802.11b card, and many of these cards are now CardBus cards. Best bet is a CF card, but check for Windows Mobile 2003 Drivers.