What kind of animation are we talking about here? Are you creating the animation in a suitable animation program or do you have some kind of completed animation file? If so, what format?
Basically, Movie Edit Pro is a video editing software. You will be able to import an animation, if it is in one of the common motion video formats that are supported by the program. Animated GIF files are also supported. You won't be able to import any more specialized/proprietary animation file formats or scripting files from animation programs. So, if you're using an animation software to create your own animations, it should hopefully be capable of outputting the result of your work in a common, standard video format (e.g. MPEG-2, AVI or WMV), which you can then simply import into Movie Edit Pro.