Program help

[sword]

I'm planning on making an Advent Children patch that will change there outfits. I'm also gonna change there portait on the menu. I need to know what program I need to do that,

[kini]

 i dotn think there is 1 program to do it but im new to it all too, there is this guide
http://www.webamedida.com/~borde/How%20to%20build%20models%20for%20FF7PC.rar

and i think someone already changed the menu pics