I've attempted to install OS 10.6 on a 2007 macbook that is using 10.5. I'm getting an error message saying that my computer must have 10.5 or later to install snow lepoard (which it does). Anyhow, it's not installing and I can't figure out how to get out of the mac os x installer menu and back to my computer. I'm only getting the option to restore from backup (which I don't have). Any suggestions?