Upgrading Macbook hard drive

Hi everyone

I have a 2008 MacBook 13.3/2.4/2X1GB/160/SD-DL. I'm looking to upgrade the hard drive to at least 500GB. Any idea as to where I can look for a hard drive and what kind would be best?

Thanks

These guys are pretty good:

Performance Upgrades; FireWire USB SATA Storage; Memory, more at OWC

- Nick