3
I agree with Bluenova. Then again, if you really need it see at:
http://prdownloads.sourceforge.net/xoops/
Scroll through the page. All the core releases, patches etc are available. Also modules. I am sure you'll find it.
http://prdownloads.sourceforge.net/xoops/xoops-2.0.6.zip
Grtz., Shine