Online CPT or Paper-Pencil CPT

Hi All,

Can you please help me out with this concern. I appeared for the June '09 CPT and just missed by a narrow margin. i want to re-appear in December but heard of the Online CPT's as well.
Can i apply in the August/September Online CPT even though i applied in June for Pen-Pencil mode and NOT MISS OUT ON the December chance (i want to save the chance to appear in December as one can appear 2wice in 6months, once online and once pen-paper)

Please share your invaluable inputs.

....Neeraj