Need transportation help

Hi I need help figuring out transportation. I don't think we'll be needing limos.
Mainly we need pick up an drop off service.

I'm getting married the Friday night after Thanksgiving (11/26/04).
I need transportation from Flushing Queens to Bethpage (need to get there around 3:30-4PM.) And we'll need the reverse trip at about 12:30 AM that night.
We have two groups of people- a group of five and a group of about 15.
can I get an idea of how much this would cost?
Thanks