1st you need the c-130 paint kit from captain sim main site check in and go click on the your c-130 link then there will be more options for stuff like extended download , service free liveries and paint kit
2. for any of us to try and tell you how to repaint would take fare to long
so try this link http://www.flightsimworld.com/forums/index.php?showtopic=14002
and this will tell you other tools needed for repainting
and give you a ruff guide on how to do it
hope this helps you out