“ I’m a huge fan of ultra portables! They are small, light and just powerful enough to do what you need to get done. Sure I run Windows (in VMware), but for me the Mac OS better fits my lifestyle, but if you are looking for an ultra portable you are going to have to look beyond Cupertino.
So, when I got the Dell mini 9 all I wanted to do was put Leopard on it. With a little bit of tinkering and some help from a good blogging buddy Kevin Tofel I was able to painlessly install 10.5.4 on the little guy.“
http://uneasysilence.com/archive/2008/10/13519/