Need help with Backtrack 3

[totally904]

I have this computer - acer-aspire-5735-4624 - except I decided to put winxppro sp3 on it and everything is working tip top. Well i got this card Belkin N1 Wireless ExpressCard except it is the v2 and i was looking around for networking tools and found backtrack 3 out of curiosity in its potential i wanted to try backtrack out with the belkin card so i found the ath9k driver which will allow me to use the belkin card with backtrack the only problem is is that i am not familiar enough with backtrack to understand what this means:
Enabling ath9k

To enable ath9k, you must first enable mac80211:

Networking --->
Wireless --->
<M> Improved wireless configuration API
<M> Generic IEEE 802.11 Networking Stack (mac80211)

You can then enable ath9k in the kernel configuration under

Device Drivers --->[*] Network device support --->
Wireless LAN --->
<M> Atheros 802.11n wireless cards support
could someone plz break this down for me and explain how i can do this

[Hebrewhammer]

yea if anyone can help this guy out it might help me out too