Problem: When your site is viewed in Internet Explorer all flash files have a dotted line around them and you have to click on flash movie to activate it.
Reason: "IE did this because they lost a patent dispute with Eolas about plug-ins" I believe they call it ActiveX.
Fix: I was going to make a how to but these guys do a better job explaining than I could. So check out the following links:
This explains how to fix the problems step by step
Adobe Flash detection kit
Macromedia - Flash Player : Detection Kit
If you have any problems pm me and I'll see if I can help you