	norstar nor sets uisition for stock norstar bancorp said it has agreed in principle to uire united national bank of callicoon n y by exchanging three norstar common shares for each of the united shares outstanding based on the recent price of norstar s stock it said the proposed tax free exchange would have a market value of about mln dlrs norstar said the uisition is subject to approval by united s holders and state and federal regulators united has assets of mln dlrs reuter 
