BackTrack V.2.0-BackTrack V.3.0 (Final) has the following drivers included, in addition to the standard 2.6.20/2.6.21.5 kernel drivers:

* madwifi-ng (Patched for Injection)
* hostap (Patched for Injection)
* prism54 (Patched for Injection)
* bcm43xx (Patched for Injection)
* rtl8180 [1] (Patched for Injection)
* rtl8187 (Patched for Injection)
* ipw2200 (Patched for Injection)
* rt2570 (ASPj's Drivers)
* rt2500 [2] (not sure if patched already but can be added with this link http://aircrack-ng.org/doku.php?id=rt2500&DokuWiki=c3d1aad1f57c675981be7c 8290e369d6)
* rt61
* rt73
* ipw2100
* ipw3945
* acx100 (Patch available -BETA-)
* zd1211rw (Patch available -BETA-)