Aero Glass is a program developed by Big Muscle. It is free to use, however... You will get desktop watermark and occasional popup box asking if you want to copy your machine code. This is used for when you donate, you place the machine code in to generate a key for Aero Glass. If you want aero back, support the Developer by donating to him. Don't complain to him about it asking to donate.
Aero Glass Customizer (Free)
To configure aero glass easily, use this neat application. Once you have it downloaded.. Extract it into your aero glass install and run as admin.
Extra: Download the right click menu addon to make configuring aero glass easy from desktop right click.