I have a SIT 1x CDMA USB modem( Epivalley) supplied by TATA Indicom. I am not able to instal the modem in my laptop which is having a VISTA OS. The same is working perfectly in Windows XP..I tried installing the soft ware downloaded from the tatateleservices website but I am getting the following error message- "Modem Not instaled-Instal modem and restart." Kindly advice on how to instal the same in VISTA OS. Reply to [email protected] Krishnakumar read full review »