Thanks to both for great answers.

But I have one final problem.

I do all that pony say's. When I come to the combine the two curves part, I chose my two curves and goes "attach curves" in the options I chose connect.

Is this the right way to do it?

I get a strange problem, when I try to move the new curve, only the upper part of it moves and also when I scale it.

Do you have a clue?