rove312, I use FlightLine frequently, and have the same issues as you with their website. Here's the page I have bookmarked:

http://www.flightlineinc.com/mhtsullivansquare.html

I would make a reservation to assure that they turn up. Will you and your contact be making your way into town? If so...

Basically, it's $50 (last I checked) to go between MHT and BOS Logan o/w, and $19 to go between MHT and the Sullivan Square "T" subway station. If you don't want to ride the "T" ($2 to anywhere, and safe) there are taxis at Sullivan Square (late at night, the FlightLine driver will call for one). A cab into town is much cheaper from there than from Logan because it's a little closer, and you don't have to pay the airport pickup fee and the tunnel toll, which are significant (and will be more significant in a few months - but that's for us to worry about).

You've already got your ticket, but if there's a next time, be aware that the bus service from PVD airport to South (train/subway) Station in Boston has restarted, and it costs $40 RT. The same bus line charges $34 PVD-BOS Logan, o/w. There has always been the shuttle between PVD and the Providence train/commuter rail station and then the train up, but it was a lot less convenient than the MHT shuttle. I only mention this because sometimes it's cheaper to fly to PVD than MHT.

http://www.peterpanbus.com/tickets/s...-and-fares.php