When you say that Wojnowice (you spelled it differently) is not yet digitized, did you mean that birth records for that area have not been filmed?
I found three films that have births, marriages and deaths from Wojnowice from the mid 18th century on.
In answer to your last question, the only family members from that area I know of are the Franz Joseph Ludwig born 25 May 1766. By viewing his birth record I would certainly discovber his parents names and perhaps a few siblings on either side of him so I could get going from there.
Neil