|Dave: Never seen a floppy cable with two connectors, this is not an IDE set up.|
Age: You usually do not set it up drive letter in BIOS, Windows should do that itself. If it is recognized in BIOS the put it in boot order (usually first) unless you do not want it bootable, and let Windows set it up. If there is an issue within Windows try updating system/motherboard drivers and restarting.
You have to be a little bit crazy to keep you from going insane.