Okay, this is weird. Yesterday I reformatted and reinstalled Windows. It still showed up as DMA MW 2. So I temporarily moved it to Primary slave. Now it is UDMA 2. I don't think it would be good to keep a UDMA 2 and a UDMA 5 on the same channel. I then moved the HD to the secondary channel and made the dvd burner primary master. So now I have
Primary Master: HP 640i (DVD R) UDMA 2
Secondary Master: WDC 80G (HD) UDMA 5
So I try to add my other DVD drive and it comes up as DMA MW 2 on primary slave. It makes no sense to have the system partition on the secondary channel, but my mobo must be messed up because this is the only setup that works. It is working find so far.