If you check out the msiwind.net forums, we have theorized the netbookbootmaker causes more problems than it helps. We have had Snow Leopard booting completely Vanilla for about 2 weeks now. Everything works flawlessly, including sleep, hibernation, and audio i/o.

Agreed. Did not work for me on an Acer AspireOne; the intro video after the install caused an instantaneous reboot. Bypassing the video caused the same instantaneous reboot once I reached the desktop.

However, removing the HD from the netbook and installing from an already functional Snow Leopard install worked great. (I modded my own OSInstall.mpkg to allow installing on MBR partitions, but that wasn't even necessary) NullCPUPowerManagement allows for the use of both cores, and the combo of Netkas' fakesmc, Netkas' IntelPIIXATA, IOATAFamily, and Chameleon RC3 works great. I used an EFI string and 27ae patch to get GPU acceleration working. The new version of voodooPS2 works great in Snow Leopard.

Everything else is device-specific! (by that I mean everything I've mentioned applies to pretty much every Atom-based netbook on the market, since they all have N270/N280 and Intel GMA 950 graphics and a PS/2 trackpad)

That's fair, HP doesn't support installing HP-UX (HP Unix) on Apple machines.

You’d be surprised at what an Hp mini can do. I’m running Final Cut Studio 3 on mine, with speeds comparable to real macs. for a how-to (and video) check out:
http://disturbingnewtrend.blogspot.com/