You know, I asked exactly the same thing a while ago; I got no reply...
I'm not entirely sure if there is a way (not in DBClassic, anyway). You can use the mesh commands and then stick the texture onto it, but that doesn't preserve animations or limb data and, from what research I've done (don't have enhancements!), neither to memblocks.
The only way that I can see is to follow the rather long road of loading each limb from a mesh, texturing them, aligning them and then appending an animation. For my latest game, I've come up with a better method, but it's very specific and involves the use of hidden limbs and glued objects.
"I am a living, thinking entity who was created in the sea of information."