well,im getting same problem as u do..
on my old motherboard,i had IDE driver that fixed it..
on that one,i couldnt find it..
so,what about that UDMA-66 and WinASO Registry Optimizer 2.80 program ?..
Edit:
I've found that on microsoft...
if u can,check it...and tell me if it helped you...
(cant check by myself now.. :/ )
http://support.microsoft.com/kb/247951
EDIT #2
my problem is fixed...
I'm using 80gb on IDE 80-pin
and new dvdrom on same IDE 80-pin..
tried now to copy drivers.cab from window's cd and it copied well,no glitches or something..
anyway,try the microsoft's thing..
hope it'll help you..