The Mouse setting controls both the mouse double-click and drag sensitivity, and the speed at which cascading menus are displayed when you move the mouse over them. This is a good one to set at the fastest value. The key point here is that TweakUI doesn t remove the application, it only removes the ability to uninstall the application. The application itself will run fine. This one can be dangerous if you later decide you truly do want to uninstall the application, because you may not be able to.
Repair is an advanced feature to fix system problems.
Repair Font Folder restores the special system functionality of the Font Folder, in case it starts acting like a normal folder. Repair RegEdit resets RegEdit to display all elements, and Repair Associations restores default association and icons for standard file types. The My Computer options let you uncheck disk drives, so that they will not be displayed in My Computer. Under the Network tab you can enter your network username and password so you logon to the network when Windows starts. The New tab lets you add or remove document template types used when you right-click on an item and select New.