Hi guys, I know this is probably a stupid question, but i can't seem to find a simple answer to my question, probably because there isnt a simple answer!! hehe... Basically, i want Collision Detection in my Dx9 app, as everyone would do. I've read a few docs, but something just isn't clicking in my head. I've looked into ColDet which seems quite good, but i'm not sure how i can get the Polygon's X/Y/Z Coords from inside a ID3DXMesh, i'm guessing via a VertexBuffer, but i've not been able to find much info on them either. So as you can probably tell, i'm a little confused! I've done 2D Collision Detection in the past, but that's nowhere near as complex as this, so that doesn't really help me much. Anyone have an Ideas? Sorry to be a n00b! Cheers, Dean