Is the Window border too fat for you? Would you like to put Windows on a diet? Loose up to 90% of your window weight with the new Tweaks.com diet. Better than the old diet, this new program will allow you to slim the window borders using a quick registry hack.
Open up Registry Editor and navigate to HKEY_CURRENT_USER, Control Panel, Desktop and WindowMetrics.
Right click on PaddedBorderWidth and select Modify.
Enter a value of any negative number up to 0. A value of 0 will produce no padding while a value of -300 will produce a very fat border. The default value is -60.
Click OK and reboot your PC.
Bonus Tip: If you have a Windows 8 tablet increasing the border padding will actually make using the desktop interface easier.