[ALUG] Yaboot Ubuntu

Hi I have a Mac which dual boots between Mac OSX and Ubuntu 6, and Ubuntu boots by default. I know I need to switch something in Yaboot but I can't seem to work it out. Also Ubuntu doesn't have root user and I can't work that out either. Sorry, I'm a bit of a Linux newbie --- www.simonroyal.co.uk - The box said requires Windows 2000 or better, so I bought an Apple Mac. There are only 10 kinds of people in this world, those who understand binary and those who don't