I am using Aztech USB wireless Adpater to connect Wireless Access Point (AP). With Windows XP everything works fine. Even I can capture some packet using WireShark software. But when I boot the same system (DELL 610C laptob) with Knoppix 5.0 Live CD, Knoppix detect the Wireless USB Adapter. I can see Adapter and its MAC address with 'ifconfig -a ' command. But when I run Ethereal or AirSnort, I cannot connect to AP or cannot capture any packets.

Is there any additional configuration of Wireless USB adapter before it can be used? What is the problem, please help me.