Hello, wraithdu. I found out your work while searching for a way to give a particular application the control of Vista/Win7 master volume. The thing is that I have an old Sony Vaio laptop (VGN S2XP) that needs a special application (Sony Hotkey Utility) to control the laptop FN keys. The problem is that this program was designed for Windows XP and Sony doesn't support Vista on this laptop. As Vista/Win7 has per-application volume control, this program doesn't work anymore. It detects the VOL + and VOL -, but instead of changing master volume it only changes the volume associated with the app. Here's a screenshot: My hope was to "modify" this application so it could control directly Vista master volume. This utility consists of two .exe and two .dll files. I was thinking if there was some way to decompile this app and to adapt it using your plugin, but my programming skills aren't good enough. Do you think you can help me? Is this possible or is it an impossible mission? The program can be downloaded here: Sony HotKey Utility. Thanks in advance.