When you are doing some hardcore development you may have to run many things in different console (CMD/Command Prompt/DOS) windows. Usually the fastest way is to go to Run, type cmd + Enter and cd to the desired location. There is an even better option. You can open CMD and cd to a folder just by right clicking on the folder and selecting a menu item. The trick is to use Shift + Right Click. This will give you additional options, and one of them is "Open command window here" (Windows 7).
Another very useful tip is to add your most frequently opened folders to favorites so that you see them in the left top of explorer and can open with a single click.