If you mean you've finished rendering the frames and want to view it, you can load them into Fcheck, a psuedo-compiler that comes with Maya. If you mean you have a a couple different scenes all rendered into frames and you want to put them to gether, you can do so with a program like Premier or After Effects. A freebie program called VideoMach might also work, although it doesn't have near the features of the more expesive programs.