it’s possible modify the interface of the blender 2.5?
I would like to lock and hide certain parts (such as game engine or physics engine ecc ecc) and add new icons and change all the present icons (will be largest and most colorful)
an example is this program for children is gcompris
Themes in Blender can pretty much at the moment only change the color of the interface elements, and font sizes, and at the moment custom icons are not possible. You could hide certain parts of the Blender interface by altering the python interface scripts that Blender uses but that would need some good Python knowledge.
I would be awesome if Blender had a way to have full skinning support (ie themes for everything, icon,interface, colors, controls). But at the moment it doesn’t and I am not sure if anyone has a plan to add it.