Nextgen gallery no repeat

I am working with a nextgen gallery slide show on the home page of this site as an option for a non-flash slide show.
http://www.rogersvilleinsurance.com/
I would like the show to stop after it plays one time.

Here is what I am using to get the show to display:
[ slideshow id=1 w=550 h=400 ]
(remove space by brackets to make it work)
I have tried adding:
[ slideshow id=1 w=550 h=400 repeat=false ]

But it does not seem to be the right piece of code.

Could you help?

Thank you!