I don't know about red hat , but i'm using SuSe 7.2 with the standard wlan_ng drivers and a Orinoco silver card. I,ve compiled Kismet to Prism2, because i used a different card first...conceptronic C11. To my surprice Kismet works better than ever (great dump files...no need for Ethereal if you do something like: cat Kismetblabla.dump|strings|more)

Grtz,

LostSon