The forum is getting repaired, I forgot direct links do not work. Go to the forum > SC Universe lore forum > the stickied thread "Unit Pictures"
Be sure to check out the extension mod: Hots Custom Map support on NA and EU, Despite the name it greatly expands the roster of options for the default 3 races and is updated all the way to NCO.
This is awesome. No other word fits, surprised you used an adjutant instead of a ghost/spectre.
THIS may be usefull: http://sclegacy.com/forums/showthread.php?13675-Unit-Pictures