"Yup, to use as a model."
Then you've got a lot of work with modelling =p
But it depends on how complex you want it to be... And the complexity depends on how near the camera will be from the skeleton... So, if you want to model a skeleton, i recommend to use poly modelling techniques, and also a good reference image, i found this one:
http://www.killgrove.org/ANT210/skeleton_withparts.gif
Good luck =p