One more thing...

[Inoculator9]

That isn't how you would refer to them in my experience. If you have an xbf named: IM_Troop_HO.xbf, all you really need to add is IM_Troop. So it would be this:

Xaf = "IM_Troop"

[Apollyon]

yes, you are correct, inoculator

and dukeleto, if you use just a high quality XBF and the user has settings on low then it will use the lowest quality XBF available, in this case high. For instance take the infantry, most of them only have a high XBF.

[DukeLeto]

Ah, thanks!

[Inoculator9]

No problem.

[IxianMace]

With my new units, I'm making HO, MO, and LO xbf files for them (when they have originals of course) and making high, medium, and low textures for them as well. So depending on what the settings are, you should be able to see the units with different degrees of detail.