1. click tools ->internet options -> general tab-> click settings ->view objects, remove shochwave flash object from the list.

2. OR you can use the uninstaller
http://www.webmasterworld.com/redir.cgi?f=21&d=3226&url=http://www.macromedia.com/support/flash/ts/documents/playerfaq.htm#remove

here, it has the compelete method,
http://www.macromedia.com/support/flash/ts/documents/remove_player.htm