Peter,
If you want to use your Special Edition with Finale, I strongly recommend updating to Finale 2009. There you have the possibility to integrate VSTinstruments (respectively AUinstruments) like Vienna Ensemble. With Finale 2007 you have to go over a virtual MIDI port. Furthermore a ready made set of Human Playback Preferences is ready for download for Finale 2009.
As far as I know you can create MIDI control data with the expression tool, but I don't know about keyswitches.
Sergino,
You can create your own Human Playback Preferences with keyswitches and MIDI control data to your liking. For triggering the repetitions, you will have to create a "Custom text" technique. At "Apply only" you will have to enter a keyword (like "repetition") and at "Action" you will have to enter the keyswitch and/or MIDI controller.
Best,
Andi
Vienna Symphonic Library