My new BSNL 3G Datacard is not getting detected on my PC & Laptop running WinXP Prof (32bit OS).I noticed that it works perfectly on a 64bit operating system. On plugging in my new BSNL 3G datacard 7.2Mbps (LW273 V1.2) no self installation happens.The details of my device are as below:Mfg Date: 2010.11Hardware version: V1.0Software version: LW272 V1.2IMEI: 980069008388877a) The device does not auto install on my laptop which is having legal version of Windows XP SP 2If I put in a Micro SD card and connect, the memory card gets detected.Without the Micro SD card no drive is listed in the Windows Explorer on connecting the device.b) I verified that the SIM card is active by making a telephone call from it. I also contacted BSNL helpdesk who verified that the SIM card was active.c) I subsequently installed the software version available in the manufacturer site (Teracom) in the below URL which is for LW272 V1.0. Even then, on connecting the device no network is detected.d) The installer for LW273 V1.2 on not available on the website and the phone and email contacts given in the site do not work.The spport phone number (0-97188-84242) but the number does not seem to be valid.Regards,Koshy A Joseph