Did Zarqawi have access to info about Iraq's WMD program?
I doubt he had any information prior to the invasion; however, I'm sure that he's been given some information in the past two years -- if nothing else, I think it's very possible that he has been told specific areas (even if it is just a house or two) that need to be protected at all costs.
We knew that he was working with chemical and bio weapons with ansar al-islam in the north well in advance of the war and training terrorists in their use in afghanistan before that. He also was in charge of the huge bomb/chemical weapons plot in jordan to destroy the U.S. embassy, jordanian security and the Israeli crossing. The convicted plotters confessed that the chemicals(some of it nerve gas)came from iraq via syria. They also said zarqawi was the leader.