Sorry. I recommend a few free options (you can
google them)

irrlicht
panda3d

these 2 would be best as far as the free ones
(they are very easy compared to others)
you wouldn't have to pay anyting to make
great stuff with these that would hide your code
(you have to download a free c++ to use them, also
live dev-c++ or visual c++ express edition)
Lite-C free is okay to practice, but if you really
want to get good, search for "open source",
although they tend to be harder to use
(I may loose money with commercial engines, but it saves me time).

also:
-ogre
-apocalyx
-crystalspace