Decreasing Curve Bevel

Is it possible to make a Curve Bevel increasing it’s Size along the Path? I try to make a kind of corkscrew with this. I think, his would be an easy Way to do this.
I have a Path Object (Curve), and a Bevel Object (Curve Circle). Now, the Size of the Bevel should be 100% on Path Start, and 0% on Path End. How to do this?
Can anybody help me pleas.
Thanks, Doc

Hell Yeah! DupliFrames! That was the Keyword. :smiley:
Thanks JarellSmith