Printing on Avery L7666 labels

Hi,

I'm using Outlook 2003 SP3 and would like to know if there is a way of
adding a new paper type (Avery L7666) when going into:
File Print Page Setup Paper.

Currently there are a selection of paper types to choose from but not the
one that I need.

I'm aware that I can use mail merge with word but I only print individual
addresses from time to time, in which case it would be helpful if there was a
paper type template for label mentioned above.

Thanks,
Saad