heh blue screen is quite easy to do in after effects, so long as the screen is one colour and not different shades of blue lol.
another option is photoshop batch production, which is quite simple to do if you find it quite a struggle.

to do it in after effects, just use colour key (increase tolerance) and finish with a matte choker. although it may take mutiple colour keys to do a screen depending on the amount of blues you have... mine is a bad example as to many blue reflections everywhere... doesnt help when one of the guys is wearing blue jeans lol.
but heres the final output, all thats left is to slap in some screens etc.
The movie link is still active.

oh for those who are interested, this is how bad the modelling was: - if it wasn't for the textures this project would have been a failure ... visually speaking of course.

heres close up texturing.
it was a pain uv mapping that thing!! although still looks a bit rough in some areas.