In DB classic you can't really do very much with a model unless you have the DarkMATTER add-on, then you could make it into a memblock and make your own .X export - not an ideal solution but it's possible. DBPro can export a mesh in it's own memblock format which can be loaded into DBPro again, but we should get some sort of .DBO export in the future.
MAKE OBJECT TRIANGLE Objno,xa,ya,za,xb,yb,zb,xc,yc,zc
This makes a polygon object, like 1 single 3 point polygon, and those values relate to real world coordinates. It does make a reasonable ground trail, I actually used 2 MAKE OBJECT TRIANGLE's per loop in Stoked to get the snowboard trail - so deleting 2 objects and making 2 triangles to replace them is not out of the question in DB.
Tim, for this level of development - you should really be using DBPro and not DB, you'll quickly get sick of the limits of DB and wish you could do more technical stuff like making meshes through code for example.
Van-B

The nature of Monkey was irrepressible!.