Some would advise you to move the CD writer and DVD drive onto the same IDE cable, then connect both hard drives onto the other IDE cable.

For the purposes of setting up your new hard disk (partiition, format, etc), you can just connect it (jumper set as slave) to the open connection on the DVD cable.

If the DVD and CD drive are of new enough specs to match the hard drive and mainboard IDE speed (Ultra 66, Ultra100, or whatever), then there may not be any real advanttage to grouping the hard drives on one cable, and the removable drives on the other.

edit - Some mainboard/cables/drive combinations require that the device set as "master" on each IDE cable must be connected to the END of the IDE cable, and the slave device (if any) connects to the middle connector.

You can use the hammer to install the drive mounting screws, as screwdrivers are only for undoing screws

You may not need PartitionMagic, depending on your OS. Boot up after connecting the new drive, you may be able to partition and format it just using the OS.