i hate to tell you, there is a much easier way, that works just as good!
create>Nurbs Primitives and near the bottom is an option that says "Interactive creation", just tick that off by clicking it..
for polygons it is very similar.....
create>Polygon Primitives and near the bottom is an option that says "Interactive creation", just tick that off by clicking it..
i hope this helps as well 
-Andy