I use MT6227 Drivers,USB Modem Drivers and PC Sync Manager for my BESTEL 6000(MT 6225) and works fine for me.I use Vista Home.
the links are below
MT6227 Drivers :
http://www.geek-asia.com/wp-content/download/mt339_mt6227_drivers.zip
MT6227 USB Modem Drivers :
http://hk.geocities.com/civicwong/USB_Modem_Driver.zip
PC Sync Manager :
http://www.geek-asia.com/wp-content/download/mt339_pc_sync_manager.zip
Password: www.geek-asia.com
