coming from a similar problem when i first started, i can say that the easiest solution would really be to find a cheap NIC for the machine and just use ethernet. save yourself many nights of restless torment!
i had no other choice but to use the alcatel speedtouch usb for my first year as a linux user with broadband, and i hated every second of it! finally had the option to get an ethernet modem from my provider, and havent been happier since!