Hmm i wonder about this too,cuz you see alot of ppls creating their own tibia skins,like changing the interface of the client when your ingame,they change the look of item slots and such stuff...That's harderer than saving a pic and put it into the tibia folder,sooo i wonder too what program to use...I know you can use like paint to edit a picture,but if i take a screenshot of my ingame-client interface and edit that one,i can't simply paste the original one over and then play and see my edited one.