Possible Duplicate:
Mathematica “prelude”
I'd like every plot to have a frame and Helvetica labels. I'm satisfied with
SetOptions[{Plot, ListPlot, ListLinePlot}, Frame -> True, FrameStyle -> FontFamily -> "Helvetica"];
except I have to type this line at the beginning of every new notebook. How can I have these options set by default every time I create a new notebook?