[Zope] Inserting Rows from a dictionary

Dear zopistas: I need to update a database (postgress with pygresql) which each row contains hundreds of columns. The row is to be fully replaced with new values, which I read out of a MS-SQL database (egenix odbc/freeTDS). So I have all the values in a dictionary. Is there a way to send an update command via PyGresSql using the dictionary? OR do I really have to program (and maintain) the monster update statement? Jerry