I had to uninstall both primary ide channels that unistalled my hard drive also (I think both HDs although both were SATA??) Any way upon reboot all drives were reinstalled. I am still showing two primary ide channels, but now both are DMA, one is mode 5 (presumably the HDs) and the second is mode 2.
The DVD transfer rate according to Nero is now back up to 16x, average 12x.
Thanks everyone for helping. Another success story of this forum!