How to build any package for w3af ?

I'm so confused before that I was not found the tutorial about package w3af. First I looking for need this application to install on my netbook.
That's why I search on the internet browser for surfing at the internet. Speechless, this is below to w3af for audit framework security :

Just click this site : http://sourceforge.net/apps/trac/w3af/wiki/HowToInstallPython2.5