Besides using the red wire for grounding? The main use of a isolated ground receptacle is to keep stray noise from getting onto the ground, and into the computer equipment. Run a 12/2 mc cable,with an insulated equipment grounding conductor, use fittings approved for grounding,attach the equipment grounding conductor to the metal box, run cable from load back to service panel, and call it good.
This will help by not allowing a path for noise to get onto the equipment grounding conductor.
Do not, like I have seen in some cases, add a seperate ground rod just for the computer equipment!
Good Luck!
Rick Miell
