i am currently trying to open the palpatine model in modview but it says that the model has 72 bones and that the _humanoid has 52 which _humanoid folder is the one with 72 bones or is there anything i can do to sort this
It means the model is designed for Outcast rather than Academy (even though it'll still work in Academy). You should change the '_humanoid.gla' and 'animation.cfg' files in the '_humanoid' folder with the ones from Jedi Outcast.
Make sure you back them up first though so you can swap them back, otherwise you won't be able to switch back when you need to open a model for Academy.
and how do i do that
If you don't have Jedi Outcast, then download the demo from Filefront, which contains the files.