Annoying GIMP!

Just spent a VERY frustrating 30mins trying desperately to make bezier curves using the path tool in the GIMP (Gnu Image Manipulation Programme), specifically I wanted to be able to turn the straight lines/vertices into more rounded shapes.

Normally you do this with 'handles' that are used to adjust the parameters for the curve, but despite following the instructions in the tutorials I just couldn't get these to appear!

After MUCH frustration and almost giving up I realised that I had the "Polygonal" option ticked (I was going to create a shape with many vertices and then curve these) which, according to the manual disables the handles and only allows straight lines! D'OH!