P4C800-E Deluxe, Promise 20378~~~

cpu p4 3.0e
mobo asus p4c800-e deluxe
mem corsair 512x2
video nvidia leadtek 6800 128mb ddr

these are the new parts used to fix my poor old computer!
Now, I have two HD, two drives...
WD40BB and WD80JB

I am wondering is it faster if I install two HD on seperate
channel?!?!
I had Abit VP6 for my old PIII 1Ghz, with total of four IDE
channels...
I tried to put two HD on one channel and seperate, I felt seperate the
HD on different channel accelerated the HD to HD ransfer.....
Can someone tell me about it?!

Now, both drives I have are ATA100, WD40BB, WD80JB.....
With the P4C800-E Deluxe,
I tried the connection shows below:
Pri-IDE master WD40BB
Pri-IDE slave NONE
Sec-IDE master DVD
Sec-IDE slave CDRW
3rd ~~~ NONE
4th ~~~ NONE.....
These info shown in the BIOS...
the Promise contoller shows the 80BB is detected when I set the
Controller from RAID(Default) to IDE mode....
But in the windows, hardware manager can't install the driver!!!

Can someone help me wih this?!

Or I just can't use ATA100 HD on that controller?! has to b
ATA13...?!

THX!