Can't get webcam works, but some can works with same ID

[b:z]

Hi,

I can't get most of webcams colorvis with ID 1871:0603 working. But, there are several webcams with the same ID can work normally . I don't know why there is different because all of them have same ID:

root@ubuntu:~$ lsusb
Bus 007 Device 001: ID 0000:0000 
Bus 001 Device 009: ID 1871:0603 
Bus 001 Device 001: ID 0000:0000 
Bus 003 Device 001: ID 0000:0000 
Bus 006 Device 001: ID 0000:0000 
Bus 005 Device 001: ID 0000:0000 
Bus 004 Device 001: ID 0000:0000 
Bus 002 Device 002: ID 0483:2016 SGS Thomson Microelectronics Fingerprint Reader
Bus 002 Device 001: ID 0000:0000
root@ubuntu:~$

I am using Ubuntu 7.1 and WXCAM1.0.1
Please help me to get it works. I have many webcams with same kind
Thank you very much.