The main problem with doing this is that there are a lot of different distributions (or ‘distros’) of OSX86, and knowing whch of them will work fine on the AAO is a bit of guesswork. There are, however a few that have been used by quite a few people. The XxX, iPC and iAtkos distros have all been installed successfully, and I believe that all of these are available up to OSX 10.5.6.

Each distro has a very similar set of optional components, though if you use a guide for one for another, then you may have to go hunting through the options to find the things you need, and they’re not always named the same.

A great guide is available at :-

http://www.insanelymac.com/forum/index.php?showtopic=153352  

This is for the iAtkos distro, but works fine for the others if you can search out the relevant bits in the install. Its a good step by step guide with a lot of feedback from other forum users afterwards also.

One tip – make sure you install the ‘Shutdown Fix’, as if you don’t then your AAO will crash about 50% of the time when shutting down running on batteries. It’s not a big issue (just hold down the power button to switch off), but always feels better and neater when it doesn’t crash!

Insanelymac in general is a great source of info for anything OSX86-related.

Also, the OSX86 Wiki at http://wiki.osx86project.org/wiki/index.php/Main_Page is also a godsend.

Cheers!