if you have the money, id suggest buying a dongle, heres a list of cards and dongles that work right out of the box, and those who will work with special configuration. I have a Hawking HWUG1 with a high grade antenna attachment
It uses the rt73 driver and a ralink chipset.. injection and monitor mode work fine
compatible card and dongle list
http://backtrack.offensive-security.com/in...hp/HCL:Wireless