Im working on a horrow movie, and im probably getting a bit ahead of myself but I was wondering what were some good programs where I could created a creature like character all cgi and stick its animation into a real filmed scene? Ive heard about 3d max studio. Does anyone have any suggestions. Thank you

haha trust me, find another way..
because if you havent got the slightest clue as to how to use a prog like maya or 3ds... then you wont be able to create something realistic..

itll take years to learn and MASTER the creation of realistic 3d animations...

dont mean to burst your bubble, but its not gonna happen man...

Yeah just to second what J. M. said it takes quite a bit of trial and error as well as many hours of study and practice to create high quality CGI. Better to find someone who already has the equipment and skills and farm that work out to them.

You can check out a movie called "Despieser" by Philip Cook (I believe that is his name) it was shot on MiniDV and pretty much everything other then the actors is CGI. Some bizzare creatures in that. Not fantastic but pretty damn good on the no-budget level.
Good luck.
R. Michael

Poser and Animation:Master are two hobbiest/indie-grade applications for doing this sort of CG work. I think both sell for under or around $300.

Pros would likely use Maya for modelling, MotionBuilder for motion capture cleanup and character animation, then back over to Maya with MentalRay or RenderMan for rendering.

Have fun.