For those of you using the command prompt frequently, you can add a registry key to enable right-clicking on any folder in Windows and have the command prompt run in a box already changed to that directory.

Run Regedit and find the HKEY_CLASSES_ROOT\Directory\shell key and right-click to make a New Key. Name the key cprompt, and in the Value pane set the key's default value to Command Prompt. (You can label this any way you wish. What happens is the context menu will pop-up on a folder with the label "Command Prompt," but you can give it any label you like.)

Go back and right-click the cprompt subkey to make another New Key. Name it command. Set the key's default value to C:\WINDOWS\SYSTEM32\cmd.exe /k cd "%1". Close regedit, and the effect should be immediate. Right-click on any folder and you should see Command Prompt in the context menu, and it will call up the command prompt in that subdirectory