How do you paint a highly glossy plastic figure?

I have a plastic figure that is very glossy, and I really want to paint it. What kind of paint should I use?
If this helps, the figure is a DIY 10" Trexi Figure. Pimp Profile Layouts

i'll mask off the area I'm painting and use a fine sandpaper to get a surface paint will stick to. I think 110 grit is what I use to start with. With staple a small piece around a piece or block of wood.