Hi Loi le Beau, I had replied to your earlier post, but maybe you haven't checked it. This stupid modem we both have is probably not capabl of more than 36kbs using XP !
Apparently there is an issue with the USB workings in XP and this modem wont work properly. I have searched the net for as much info on this as I could be bothered with (not using this modem any more) It has something to do with USB enumerator or something like that. There is a fix for this from M/soft but didn't work for me.
Best advice is get a serial modem and you won't have any probs.