What might be happening is that you need to inject your chipset kext into the iso of dvd image. I personally don't know how to do that, but I believe there are instructions in the Wiki section of this site, and probably mentions throughout this forum.

I had an issue with a distro that did that to me constantly...

It's also possible that the iso you downloaded is corrupt.

I've had the most luck with the Hazard Client Server Distro for Snow Leopard.

You can download directly off a link on their site. http://www.leohazard.com

still use -x -v at start up, see where that gets you

You could try iDeneb 1.6, I could never get it to work, but I think its because I am on an AMD Chipset, you'll have a lot more success with your Intel Chipset

Also to find kexts for your system, check out http://www.kexts.com

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