Hi
It looks like you have two meshes one subpatch one polygon, if you want to keep both meshes but see one at a time go to object mode (right click over the object then sellect object mode) activate the channel box (should be in the top right hand corner) once that is activate at the bottom there should be layers now sellect one of your meshes then go the where it says "layers" click on that then sellect "make layer from sellected" now if you click on the "V" this will make it invisable click on it again to make it visable, do the same to the other mesh. You can delete the layers but this will not delete the items in them...........hope this helps dave