I cannot help with graphics, animation, or music, but I can help with dialogue -- if you still need help with that.
I designed a fan-game called Star Trek: the Continuing Voyage a few years back www.startrekthecontinuingvoyage.com
, so you can take a look at my work and see if you think I could help with anything.
I have done a fair amount of writing, some of it is published on the web. My wife has a degree in film and took classes in script writing while in college, so I would certainly be able to get her input as well.