Yahoo! Something so simple solved my problem. Thank you.
After I reset the CMOS, I was able to get into the BIOS again. I reset the memory for 1.95, 667MHz, 5-5-5-15-T2, and rebooted. All OK so I put the two OCZ DDR2 6400 800 sticks back in and rebooted. It came up fine so I'm back in...