I have the same problem, with Windows 7 RC and also with a newer build (7600).
After booting the Windows 7 DVD and loading files, when the logo appears I get the BSOD.
My configuration is Asrock ALiveNF7G-GLAN
motherboard, Athlon 64 X2 4200+, 2 GB of memory, Nvidia GeForce 7900GS, and 2 HDD (250GB SATA and 160GB ATA).
I tried all the options disabled and enabled in the BIOS, I pulled off 1GB of RAM, and I allways get BSOD with different messages.
On another computer, the installation went without any problem.