nomad.......Ok ......You will have two IDE sockets on the MOBO ....one is the Primary and the other one is the Secondary...... What I do .......is connect the hard drives to the Primary and the cd drives to the secondary .....
So if you had 2 hard drives and 2 cd drives .......
the connection would be ......
Main hard drive ( the one with the O/S on it ) would have its jumpers set as Master ...and plugged into the end of the IDE cable which is plugged into the PRIMARY socket on the MOBO ......and if you had a second hard drive it's jumpers would be set as Slave and plugged into the connector in the middle of the Ide cable.
The cd 's ....... again set the jumpers to master on one and it would plug into the end of the IDE cable which is in the secondary socket on the MOBO ......the 2nd cd drive would have it jumpers set as Slave and plugged into the middle connector on the same ( secondary IDE) cable. Note......the connectors on the IDE cables should be keyed so they will only go in one way .......unless you have an older machine and in that case the grey ( flat IDE cable ) will have a marker stripe on it to identify pin # 1 ( marker stripe will be either red or black.) If the IDE connectors aren't keyed ..........plug them into the back of the hard drive or cd drive so that the marker ( or stripe ) is toward the 4 pin power connector.
Hope this helps you .
dl65