[chmorroni]

Ok. Thanks to all the replies. From what I am seeing, I should be able to use a polar coordinate system to define the curve, but I can't find a way to do that.

In playing around with the equation line tool a little bit, I have created an Archimedean spiral using the following data: x(t)=t*cos(t); y(t)=t*sin(t). I can't figure out how to modify those equations to fit my radii. Any suggestions?