How to get your Compaq 6715s wireless connection work on Ubuntu?

I have a Compaq 6715s as my working computer and running Ubuntu 9.10. After I install Ubuntu, I have wired network connection only, the wireless network connection does not work.

 

Then I go to this link, https://wiki.ubuntu.com/SergioZanchetta/Old/HPCompaq6715s, follow the instruction of that article, however, the wireless network still does not work.

 

Then, follow the instruction at here, http://ubuntuforums.org/showthread.php?t=766560, the problem was fixed.