activex flash player

My operating system is vista. I have norton internet security 2012. Recently tried to install the new adobe flash player on internet explorer 9 for games on Msn.com. Get response sucessfully install, but can't play games. Also have trouble with the ads on the game screen. Ads flash real fast no sound and when finished running the game I'm trying to play says I have to install new adobe flash player. If I go to internet explorer tool, safety and uncheck the activex some games I can play but no sound. Others say need acitvex to play. The ads will run at normal speed with sound. Hope this makes sense. Help!!!!!!!