in order to add a new unit in your game, you have to use a civeditor.
setting the value as indicated...
Recommended settings
Move 6
Attack0
Defense2
Transport 4
Bombard 0
follow the instruction on the thread:
how to add/use these new units
http://forums.civfanatics.com/showthread.php?t=31576
enjoy
before anyone ask me, adding a civilopedia and units32 images !!!