Usb driver windows 7 x64 sb5101

[renanflores85]

Hi guys, im acidentally play football with my modem sb5101i, broken the rj45 connector (si-80003-f), im looking here im brazil for this connector, but i dont find. im using 2 different drivers (original from motorola website (because this driver give me a option to change mac adress but dont connect) and a driver from other website i dont remember (after install original driver, this give me connection), and windows xp to sucessfully connect to internet. But the problem is: some games (battlefield 3) dont run in windows xp, and i using 16gb of memory (windows xp max is 3.25).
Anyone have sucess connecting this modem in windows 7 x64 using usb?