Tata indicom wireless usb modem issues

i am currently using the epivalley dialer for my usb modem and am getting the error saying my drivers are not installed... i suspect this is because i am now using the windows 7 beta and do not have the required driver update which might not even be out yet.. really need to get it to start working please help with any suggestions.. remember im using windows 7 beta OS not vista or xp.. and please dont suggest that i shud change my OS.. P.S. - windows 7 is fabulous