I name them according to what class they are. i.e. when I upgrade them, I make sure I rename them to be the new class name. So, for example, Small Fighter I 0001 would become Small Fighter II 0001. But then, I'm boring =)
__________________
How's my Programming? Call 1-800-DEV-NULL
Get the Space Empires V Editor and DevnullMod at http://www.devnullsoftware.com/se5