How to add nav-menu to dfBlog theme

I would like to ask how to add nav-menu from WordPress 3.0 to this theme. Tried general tutorials how to add it to old themes, but they doesn’t work for me.

I just found little help here: https://www.ads-software.com/support/topic/anyone-using-dfblog. There is part of code responsible for menu in this theme. So no need to look further

Thanks in advice,
jukooz