Help with my joysticks, please!

Hello,

Today i bought a new ps3 standard controller and i found out that the default configuration of buttons is messed up and i want to change it. The problem is i don?t know how! I have tried everything in windows 7 and control panel, properties, joystick emulators, everything! But the issue here is that i don?t want to emulate a joystick or use my keyboard to play, i want to change the BUTTONS, i mean, i read somewhere how somebody changed the default buttons config of a game using regedit> and that, that is what i want, i want to change the default configuration PERMANTELY, but of course, i don?t know how, so please if anyone can tell or figure it out, PLEASE I BEG YOU.

Than you and sorry for my bad english.