Originally Posted by 8210GUY

Yes, the Sata drives use their own cables leaving the ide connection free for use as it currently is, so as long as you have enough power and leads what I'd suggest is install your OS to the Sata drives, copy the data you want to keep over to them, then format the ide drives then copy the data back over, then anything you can't afford to lose save to the ide drives.

One thing when installing the OS to the Sata drives, unplug the ide drives first, otherwise your OS wont be seen as the C Drive, once installed you can plug them back in and they will be assigned new drive letters automatically.
Also before plugging them in make sure you set the raid drives to boot first in the bios, otherwise it will try and boot from the ide drives, and remember to install the raid drivers by pressing F6 at the prompt when installing the OS or it wont see the drives to install to, hope this helps.