I want to pass a value in a cell to a web query via a hyperlink.

specifically in the query..

http://www.switchboard.com/bin/cgiqa...=37&image1.y=8

the value after &T= which is now BOSTON in the example, I want to pass
the value in cell C3
in my excel datesheet.

I need to know how to format C3 so that is passes as whatever value is
there. I know there is some character or characters to use to format
C3 so that it's value passes but I can't remember how to do it.