What Pinnacle device do you have?
I found this page that lists the drivers available for various devices. If yours isn't listed you may have to consider sending the tapes out to a transfer service.
I just did a transfer of a Hi-8 tape for a friend but I was only able to do it because I still have my old PC with a firewire card and a Sony miniDV camcorder with the pass through feature.
And you're starting kind of late, I don't know how you'd get the job done before Christmas.
Joe