O.K. one more try...
You have 4 IDE channels. 2 Abit and 2 Highpoint.
USE ALL 4 CHANNELS!!!!!!!!!!!
Why, because it will give you best compatability and
performance.
Seperating DVD and CD-ROM is always a good idea
if you can do it. Look at your Pioneer and Plex manuals
they strongly reccommend you set them as MASTERS or
ALONE on an IDE channel (especially Plex). Since, they
can't both be masters...
..IDE1 DVD and IDE2 CDRW (or vice versa).
As I stated before, you do not want DVD and CDRW to share
same channel with your IBM's as they will just slow your HD's
down.
Also as I said before, these drives (DVD and CDRW) are
ATA-33 and they do not work well on HPT-370 (read FAQ in
your manual or on ABIT Website). So keep them off these channels.
Now, since you already are using IDE1 and 2...
...IDE3 and 4 for your IBM HD's.
I don't know where you got the idea that your Highpoint
IDE sucks, but its actually BETTER that your Abit IDE. If you
don't use HPT-370, you are wasting your FASTEST IDE
channels.
Again, you don't have to do this, YOUR CURRENT SETUP IS FINE.
However, if you want BEST PERFORMANCE and SYSTEM COMPATABILITY (and who doesn't) the purchase of extra IDE cables (if you even need to) as its worth the performance gain.
O.K.?!