I you plan on using the new optical drive as the only optical drive and you want it on IDE 2.
Then set it a master and connect the power and IDE cable to it.
Boot into biios and see if you can force detection on IDE2 with the bios.
It's been more than 2 years since I have even touched that board but you should be able to detect it in bios.
On page 26 of the manual for the board it says to set the type of drive to cdrom. after you have done this hit the F3 key to detect the drive.
May you luck be good.