here we go guys.. just follow these steps and you should have all you need to get your wireless working

1. choose a location in your home folder for all downloads, such as wireless drivers, etc.
2. download latest ndiswrapper: ndiswrapper 1.23
3. place downloaded file somewhere in a folder in your home folder and using terminal CD into that folder
4. tar xvzf ndiswrapper-1.23.tar.gz
5. cd ndiswrapper-1.23
6. sudo gedit /etc/modprobe.d/blacklist
7. blacklist bcm43xx at the end of the file
8. sudo make uninstall
9. make
10. sudo make install
11. download drivers here: Dell Wireless Drivers
12. place downloaded file somewhere in a folder in your home folder and using terminal CD into that folder
13. tar xvzf bcmdrivers.tar.gz
14. cd bcmdrivers
15. sudo ndiswrapper -i bcmwl5.inf
16. sudo ndiswrapper -m
17. sudo modprobe ndiswrapper (you should see the wireless light come on)
18. dmesg
19. reboot