HOWTO: Broadcom 43xx based wireless cards the EASY way.

http://ubuntuforums.org/showthread.php?t=405990

Well I found the above on UbuntuForums after I decided to install Ubuntu 7.04 on my Dell Inspiron e1705/9400. If you have a broadcom chipset wireless card, following the above link is in my opinion the best way to do it.