[ubuntu] X won't display with new laptop for install

I'm attempting to install Ubuntu 12.10 64 bit in my new laptop. It's an i7, 16GB ram, SSD, etc, however it also has an Nvidia 675M graphics card. I've tried several things from other posts, including using nomodeset. I'm attempting to install from a USB stick. Booting from it is otherwise fine.

Can anyone tell me how I can get it installed?

Thanks for your help,
AR