Assigning gems to commanders (map making)

[Edi]

All right, how do I assign gems to a commander I place on a map using the map commands? I'm in the middle of updating the Faerun map (targa done, map file under revision), and it's starting to bug the hell out of me that I've got all those nasties in there and no way to give them gems to make them *truly* frightening (mmm... Astaroth the Devil with blood slaves and death and fire gems...).

Can anybody help me out here, or is it impossible to do?

Edi