Some things I would add to this, just trying this out using Maya 2008:
Draw the CV curve
select the curve, then in the surfaces menu options, go to edit curves>open/close curve
with the curve selected still, go to Survaces> Planar you now have a nurb plane
with the plane selected, now to go Modify>Convert>Nurbs to polygons> (box thingy)
This will open the convert nurbs to polys options. I think it is best to use "quads" as the type, then hit apply
now that it is a poly, you can extrude away!