One of the grading criteria is "Does this site follow copyright infringement rules
correctly?" So if you are using someone else's design you need to obtain permission first. Designs are paid for a people make livings doing them, please keep that in mind. Check out
http://www.openwebdesign.org/ or
http://www.oswd.org/ if you need a free design.
And yes it is due at 11:59pm on the 14th.