aplication is .exe ofc. Actually this is a game, and i want to start with private server of this game, and i want to add a few things. Aplication dosent have any api. perl have to read just one pixel from one coordinates (x,y) for a color change, and then do his code. Let's say it's a bar in a corner, bar which change color, and perl have to know which color is actually in use to do his code. it should be easy to do, but i dont know yet how to get that works :). just first few days in perl. Sorry Laurent_R for crossing post. i just tryin to resolve this problem asap. Thanks for reply cheers. Together we will resolve this problem :)