Can't print CD labels down centre of page!

Hi,

No matter what I do, Nero doesn’t allow me to print the CD labels down the centre of the page. It just sets them to the left like it does for the inserts. When I go into Paper Stocks no matter what I pick nothing changes. I can’t choose a label and add it.
It’s like the Paper Stocks window is disassociated from the program.

This is the only thing holding me back from sending out promo material.

HELP!

Regards,
Dave

anyone?