Circle curve problem?

Hey guys.

I have this problem here:


I added a curve circle (left image). Now what I want is to delete the two right points to get the the curve like in the right image. How can I do this?

I tried to do that with a bezier, but I can’t do it so good like a circle cruve.

One another question: If I can get the curve (like the right image), can I then change the circle curve to a bezier? Is there a shortcut for that?

Thanks.

Add mesh Circle, delete in edit mode all you do not need and back in obj mode tap Alt-C to convert to Curve.
Spline type can be changed in edit mode for a Curve on T pane.