Hi Buddy,
First, it's not a hack .. it's a simple application by A_C called S2U2-VC ( slide to unlock 2 - Volume Control )
Here is the file u want: *( You might need to have an account to access the file)
http://forum.xda-developers.com/atta...4&d=1217474535
Volume Control shortcut
If you need to manually map a key to invoke the new Volume Control, extract the S2U2-VC.LNK & transfer it to your device's \Windows\Start Menu\Programs\S2U2 (for Non-English device, it varies), then use any key mapping software (some devices have it come along) to map this S2U2-VC to your preferred key.
But it assumes S2U2 is installed at \Program Files\S2U2. You may read HERE for how to create a LNK file.
The post link is right there:
http://forum.xda-developers.com/showthread.php?t=412418
Credits goes to A_C
Cristian M.