I have a Western Digital 40 GB disk drive in my 5-6 year old Dell Dimension 4100 desktop system. It has given me very good service life, and it is still functioning fine, but I figured while it is still working, it would be a good time to get another drive and install both drives on the system. I do not have a second IDE controller, and I did have a fairly full complement of devices: the 40 GB WD hard drive, a DVD/ROM, a CD/RW drive, a Zip Drive, and a floppy drive. IF I understand correctly,...