I am totaly new to linux and backtrack and I am trying to crack som WEP keys using airdump , aircrack ect ... using an Atheros Wireless Network Adapter

when I start backtrack 2 and try to run kismet i says

Server options: none
Client options: none
Starting server...
Waiting for server to start before starting UI...
Suid priv-dropping disabled. This may not be secure.
No specific sources give to enabled, all will be enabled.
Enabling channel hopping.
Enabling channel splitting.
FATAL: No packsources were enabled. Make sure that if you use an enabledsource line that you specify the correct sources.

if I then go and look at my wireless adapter with the command ifconfig .. no eth0 comes up just the lo

bt ~ # ifconfig
lo Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope: Host
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

I then downloaded the latest madwifi drivers and packed it up on the desktop... I cd in the directory and wrote make && make install and I got this msg

bt madwifi-ng-r2187-20070309 # make && make install
Makefile.inc:81: *** Cannot detect kernel versions - please check compiler and KERNELPATH. Stop.

plz help me and be easy on me my skills are not that good