MSI Wind U100
Followed Hagar's guide on setting up OSX 10.5.6 Retail installation (http://www.projectosx.com/forum/index.php?showtopic=256 )
I've replaced Ralink 802.11n card with A242x (168c,001c) aka AR5006EXS - Rebranded it as Apple Airport Extreme ( http://www.insanelymac.com/forum/index.php?showtopic=122365) - Works out of the box
If you're looking for replacement wifi , I would recommend you to get BCM4321 card which works great or Dell 1390/1490. Basically BCM43xx chipsets. Do stay away from Atheros unless you know it would work as many models do share the same device ID but they do have another chip (For instance 5007EG which shares 001c)
For Ralink Drivers -> http://www.ralinktech.com/ralink/Home/Support/Macintosh.html .
Trackpad -> http://forums.msiwind.net/osx-drivers/sent...dle-t10109.html . Basically its an Installer that install prefpanel and patches up AppleACPIPlatform to include PS2 Drivers. This allows vertical and horizontal scrolling with the trackpad. Alternatively you may want to install VoodooPS2 Drivers. they work fine however if you're like using a Sentelic trackpad grab it off from MSI' wind forums for it
That's about it. SafeSleep works with PC_EFI and with this tool (http://www.jinx.de/SmartSleep.html). Pretty much everything else works and its pretty easy to set it up straight forward without any hassle
As for bluetooth , it does work out of the box. No issues or what-so-ever with it