changing unit camo and skill levels

[Pravit]

I want to change around the camo and skill settings on some units. How can I edit them and make my own units, including reskinning existing ones - what tools do I need to get, etc.? Thanks for any help

[Kaliyuga]

Texview:
http://www.ofpec.com/editors/browse.php?browsewhat=3&category=3_3

Couple of the tutorials found here:
http://www.ofpec.com/editors/browse.php?category=1_6

Commented Config.cpp files:
http://www.flashpoint1985.com/breathe/

And of course this goes a long way towards helping too:
http://www.ofpec.com/addons_depot/index.php?ID=405