hansraj, More information is needed. Please follow the below. MarvS ----------------- If an alternative boot into Microsoft windows can be done, do mouse clicks on: Start > Settings > Control Panel > Classical View (for Window XP) > System > Hardware > Device Manager > Modems > Click on the + > Modem. Double click to expand the graphic. Manufacturer information may be displayed. For example, CXT stands for Conexant. Click the Diagnostics Tab. Record any hardware ID or vendor and device information. From the Driver Details TAB, copy out the VENdor and DEVice information. Next do the Query Modem and record the ATI specifications displayed such as: ATI3 - Agere SoftModem Version 2.1.22 ATI5 - 2.1.22, AMR Intel MB, AC97 ID:SIL REV:0x27 Try to identify the modem setup file, with name perhaps MODEM.INF. If may contain chipset Vendor informaton. On Sat, Jun 15, 2013 at 10:46 AM, Hansraj Suthar <hansrajsuthar505@xxxxxxxxx> wrote: > my country is India. Iam new to Ubuntu. Guide me to additional drivers > that I need. > Thanks. > Hansraj Suthar