I send an email to Realtek and they sent me the driver for Mac 10.5 and 10.6 at the time.
The response by the realtek support has been excellent.
If you want the driver send me an email and we'll send him or ask to support realtek ('email@example.com).
Hey, good to hear you got the kexts. Mind uploading them to like megaupload or rapidshare and spreading the love for the community