Importing animation in jpg frames

Hello everybody, I have a problem.
I have an animation in jpg images. 100 frames = 100 jpgs.
The problem is, when I want to import that in flash each jpg in separate frame, I have to do that manually. I need to drag and drop each image on stage, and then position it on 0,0px…
It is not THAT hard to do that with 100 frames, but now, I have similar animation with 400 frames, and that would be really pain in the ***…

If there is any other method, how I could do that automatically please help me out here.
I know if I try to import the .avi animation or similar, it would put every frame in separate frame… But I want it to be jpgs…

thanks in advance!
Ivan.