*My Poser 7 programme shuts down when it is set to OpenGL in the render preview settings. I'm using the latest driver for my Nividia 880GTX graphics card which I've downloaded from the site. It works fine when I alter the setting to SreeD but that makes it heavy to work with. I can't think of any explanation. Can anyone?

Using the latest Nvidia driver won't necessarily help matters with OpenGL problems (although it may be vital for some other application).   I have known one driver update to resolve problems between OpenGL and an Nvidia card, only for the next driver update to re-introduce the problem.  My current computer, however, doesn't have an Nvidia card, so I'm afraid I can't comment on specific drivers.