Help Programming C on Visual Studios 2005

Hello,
Im in a programming class in college and I need some help getting C (not C++ or C#) to compile in visual studios. We are supposed to be using 2003 because the professor has a way of tweaking the compiler (see attachment) but its different in 2005 (which was the only version they sold in my campus store.) Also for the record I can't use any 3rd party compiler for this class due to my professor. I need to compile C in Visual Studios 2005. Any help would be greatly appreciated.
Thanks