CompuServe Messages

Hello All, This will probably seem like a stupid question (there is such a thing you know). I have two objects passing each other, I have cameras linked to each object with the camera targets linked to the other, with me? In other words, Im rendering from the point of view of one camera looking at a second object, when the objects pass each other, I want to be able to switch to the other cameras point of view,i.e., two vehicles pass, the view ,at first, is looking out the window of one vehicle, then the views switch and your looking out the window of the other. I know its probably a simple thing to do, but I cant seem to figure out how to do it. I'm just starting out with 3D Studio and can use some advice. Thanks in advance. Mark