1) You should talk to the people who created it -
http://www.griaulebiometrics.com/page/en-us/tutorial[
^] - they should provide technical support and will know more about their product than we will. If they don't, then find another supplier and demand your money back!
2) See (1)
3) Grab the current date and time when you do the verification:
DateTime now = DateTime.Now;
and insert a new record (or update an existing record) in teh database with this time stamp.
Which part of this process is giving you difficulties?