If you can't open the flash (swf) file in internet explorer 7 (ie7) even you have installed the flash player. The following solution may helps to solve the problem.
What you need to do is to uncheck the "active control"
- Go to tools - internet options and choose advanced.
- Scroll down to the bottom until you see security. Uncheck the "Allow active content to run in files in My computer"
- Restart internet explorer.