Finally! Apple have a MacBook mini! A 9-inch screened, netbook-style laptop! Perfect!
OK, so they haven’t really. What I actually have here is a normally lovely-but-OS-X-less Dell Inspiron mini 9, with OS X installed on it. Leopard, in fact.
It was very easy to do, as well. I just followed the instructions here.
Very nice. I just happened to order the very same netbook so I’m looking to follow your steps.