Do you have the latest video drivers installed?
How do you mean they won't show up in the "render view"? The render view is used for viewing renders while inside of Maya. If you want to view your rendered images then use FCHECK. Right click on any render file and choose Open With > Fcheck. The when the fcheck window opens, choose Open Animation, choose a render file (only one) and then Open. It should open and play the animation.
Dave Baer
Professor of Digital Arts
Digital Media Arts College
Boca Raton, Florida
dbaer@dmac.edu