To my knowledge, Phoenix Research Group never wrote any XP driver for this modem. You can try this NT driver:
http://members.driverguide.com/drive...driverid=25942
or examine the modem and make note of which Motorola chipset it has. Repost with that chipset number and we'll try to help. If it's the common "SM56" or "62412-51" chipset, we have numerous drivers posted in our driver database.