Reschke,
Sorry if I came off gruff or something. I was just trying to be to the point. I was involved in something a few years back that dealt with the very such thing. I'm not a programmer so cannot explain it to any great degree and so will not even try, but we did deal with putting unique nose numbers on aircraft and trust me, it brought up some things about memory that I never imagined from the stand-point of a simple flight-sim player. It's nothing impossible and can be done, but it does take memory and my point was really that I personally am not for it because you'd barely see that letter on the side of the aircraft and you already have the icon over the airplane anyway (which is not a t-map) and I'd just personally rather use that texture memory for other things. Or I could be off my rocker and things are way different with texture memory these days.