Cloth sim in Blender 2.5

I have made a model in blender 2.49, when I open it up in blender 2.5 the cloth simulation does not work right.
I have made the cloths to the carachter have a cloth modifier, and the character have a collision modifier. When I strart to simulate the cloths just fall down from the character.

Would be very hapy if somone know what I have done or what I must do to fix this problem

Here’s a tutorial for the cloth simulator in 2.5. Its always a good idea if you start modelling in one version of blender to stick with that. Moving between versions can cause all sorts of problems, especially anything to do with animations.
http://www.blendercookie.com/2010/08/17/cloth-simulation/