rofl If you have never animated anything before then you will be lucky if you can animate stick figures to look good. I suggest downloading Flash mx5 and getting to know it. It takes a lot of time to get fimiliar with its coding etc and takes even more, a lot more time to make a decent animation. However you can do frame by frame animation which can look good if done right and you wont have to learn any scripting. You also need some drawing skills if you want it to look remotely good.
edit: No offence to you but I doubt you could do anything other than stick figures with out at least a years experience with it. And don't expect cgi animation rofl.