Somebody would know to build the file ".Mdl" , not the file ".Bmb" of the Opel Corsa, so that it can replace the arrow in 3D mode during navigation? Thank's to all!

Can someone help me...???

Making a 3d car takes special software I believe. I doubt anyone can help you here. I believe there is a russian guy who makes these, maybe stanislov? I would do a search for 3d car here I think IDT has stated who does this.