i finally bought the data card and it is of Alcatel. I had to install windows too. So right now my PC is dual booted with Windos XP as well as PCLOS. But a strange thing happened. When the data card was connected and restarted the PC, and logged in PCLOS with the created user, I got the symbol of the data card (Alcatel, HSPA) in My Network Centre but not in the usb notifier link at the bottom right part. However, at first time it was coming (that symbol in the Network Centre) but when I rebooted, even that symbol got disappeared.
But when the same I connected in Windows, it was installing automatically. Please do let me know how to run internet in PCLOS. As once the data card was being seen in Network Centre, I am pretty sure, it could be used, but how? I tried several times and now it is not running!! I am using 2G sim, which is supported by this 3G data card of Alcatel (HSPA)
Further once, I got a file '.hal-mtab' in /media when I run as a root the following command:
in the folder /media.