ClickOff is described as 'Auto-Close Specific Windows or programs when they appear'. There are three alternatives to ClickOff for Windows. The best alternative is Window Closer, which is free. Other great apps like ClickOff are Dialog Devil (Paid) and AutoClose (Free).
Close Windows automatically as they open with Window Closer. Use the software to close any popup windows or even to enable or disable buttons on application. The Window Close can be used on Windows XP, Vista or even on Windows 7 and the trial version can be downloaded free now.
Automatically closes annoying pop-up windows and can auto-click (EX. Yes, No) certain dialog windows based on where you tell it to auto-click. This program will remember your preferences for each window you specify. It has other functionalities.