Can anyone find me these kexts?

[I'm a Pac]

I have been trying to get my Hackintosh to work for about 3 weeks. Now that I've actually got it booting to Leopard, there are a few problems:

1. My screen resolution is stuck at 1024x768. I need a kext for the Nvidia GeForce 7000M to get it up to 1080x800

2. My sound is not working, but in a very strange way. In the Sound subsection in System Prefrences, my sound card, a Nvidia mcp67 High Definition Audio Device, isn't listed, but when i move the external volume dial on the side of my laptop, the volume control dialog comes up, with it at full volume, but with the crossed-out-circle below it.

 

I've looked everywhere, but I can't seem to find them anywhere. Can anyone out there help?

Thanks in advance.