I know this is old aswell. But for the archive, and for whoever is googling this.

I have the same laptop and I'm now runnin 10.5.5 (haven't bothered to try to update any further)

The fix to get wireless to work is to get ahold of the realtek 8187b drivers (from their site on another computer or from whatever distro of osx86 you are using, it seems to be common).

Then you have to change the device id from 33161 to 33175 in Info.plist (which can be found in RTL8187Bl.kext/). Then do kextload RTL8187Bl.kext and a dialog should pop up saying a new ethernet was found...

Hope this is to use for anybody.

Everything seems to run just fine and dandy on this laptop. Typing this from osx. The only issue I have left to resolve is the touchpad not reacting to the "touch"-clicks. But it's a minor issue anyway.

EDIT: Doh, it's a setting under System Preferences - Keyboard & Mouse - Trackpad. Enable Trackpad gestures - Clicking