Coalde UpFolder

Coalde UpFolder is a FREE tool for Windows Vista and 7 that lets you Middle-click the mouse to go up one folder level when browsing Folders. It emulates the "up arrow" button`s functionality found in Windows XP, but without actually modifying your system to put a button there (we respect your PC and leave it alone).

There are also two bonus features for your convenience: if you HOLD down Ctrl while middle-clicking, then the folder path will be copied to the clipboard;

or hold down Alt while middle-clicking to have a DOS prompt opened at the folder. Both of these are very useful for advanced users.