Trouble with Sweeping

 From:  Heiner (BILDERMENSCH)
5789.6 
Hmmm,
i created the curves of a combination of curves which i then joined.
So that seems to be a no no ...
What ways of controling a curve do i have exept for the selection of the
kind of curve to use and the amount of points to put. Is there something
like bias handles i can acess to control the curves?

Regards
Heiner