First off, I've read through all of the posts regarding BCM4312 on the forums but haven't been able to get any help.

Basically I have a Dell Inspiron 1564 which I've installed 12.04 on and for the most part everything works fine but now that I'm trying to use more in depth utilities such as aireplay and airodump I'm coming across what I believe to be a driver problem thats not allowing compatibility for these programs.

Does anyone out there have any suggestions how to resolve this?

This is the error I receive:

root@Haxornator:~/aircrack/aircrack-ng-1.1# airodump-ng eth2 ioctl(SIOCSIWMODE) failed: Invalid argument

ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211, ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make sure RFMON is enabled: run 'airmon-ng start eth2 <#>' Sysfs injection support was not found either.