ZTE MF330 PCMCIA card driver for Windows XP

I am using a ZTE MF330 PCMCIA card. This is the only card that I have through which I can access internet connection. I am having Windows XP in my system. I upgraded the same to Windows Vista. After that whenever I use the card my system simply crashes. It only crash when I start it on or insert it. I am not getting any blue screen but it looks there is some major bug with XP.

This because of drivers. You said that you are using XP, then did you bought this new or it is a old card. Go to the official ZTE site and look for compatible drivers. It is a hardware fault which is causing the system to crash so instantly.