Some motherboards say IDE-1 and IDE-2 mine does infact...however in the BIOS I do indeed set the boot device as HDD-0
Generally yes the end of the cable that goes into the motherboard is colored blue and also the major is correct in saying it's best to put your HD's on one IDE and your CD-Roms on another.
The blue on the motherboard is your only IDE Though so it looks like you have to put a HD and CD-Rom on the same IDE Cable making the HD master and CD-Rom a slave. It says that it has onboard IDE RAID so yes I'm also assuming that's what the red ports are which offer RAID 0, 1 and 0+1 and if you've never read up on RAID installations then I suggest you do as it's not a simple read a paragraph real quick and your done sort of set up.
A normal board would have 2 IDE and one Floppy but you've chosen a more advanced board featuring the newer things like PCI-E, SATA, and RAID, so they figure you are going to be either putting in SATA Drives or setting up a RAID Configuration.
I say try putting the Hard drive in whatever red slot is labeled the lowest number meaning if it says 0 and 1 then choose 0 and if it says slot 1 or slot 2 choose 1 ya know? Then plug the CD-Rom into the blue IDE and floppy as you normally would