Thanks everyone with help on my previous issue. thankfully, I was not going crazy - I was doing everything correct - the Motherboard was fried.
My friend with the DS4 - Sorry - I have not used a converter. Also the general concesus is that the DM hard drives will only accept 8MB in Cache. I have stuck to that and had no issues. The theory of only being able to support 160GB is bogus, though. I have upgraded all my 160's to 320GB PATA, 8MB cache - and they work fine. Hope that helps......