I don't know what's wrong with it... I'm using VB6 like what I've done before with the Profound Vibra Software. I can get the window handle and use PostMessage API to make the Vibra program do something on the menu... But each time I send PostMessage WM_KEYUP, the Vibra program will crash... I've passed my deadline but thank god I'm not dead hehe...I'm still trying to fix it...