I already know exactly what I want, I just can't get it to come out of the other side correctly.
What I need is a cylinder that has 64 faces, is 0.5 Blender units in radius, and is 0.2 Blender units deep.
It should have a material with the name of "blank", and should be exported as a visible .dts model with collision.
By all rights I should be able to do it myself, but I can't get the .dts exporter to work correctly or figure out how to rename materials. Joy.