digital design

What progam do people use to make these type of images...

http://www.mac-forums.com/forums/showthread.php?t=23763

(its the two images in the first post)

Im doing DT (design technology) for A level, and i just thought it would give my design sheets a 'profesional' look to them.

I'm guessing, but these are the programs i would use:

for the skeleton drawing, i would use illustrator or autocad

and for the colour render, either illustrator or some 3d rendering program..

Most pictures like that are done with Illustrator or Photoshop.

thanks for the help.

Photoshop is the word...

there is also other 3d progs that they use, 3dsmax,blender, maya etc.