When the Project path is too long, it will be little boring to reach the project directory through windows explorer every time, so here is a little tip.
from the Tools Menu, select "Configure Tools …", then add a new tool and make the Configuration for this new tool like this.
Program : Explorer
Parameters : $PATH($PROJECT)
so that will take you to project directory by one click, I don't know if anyone else has mentioned this before but it is really a cool tip and cool Macros.
more handy tip by Jim McKeeth http://www.delphi.org/2008/09/update-on-explore-tool/