Just saw this on Digg.
I have not learned everything involved with this but as far as I can tell, If you have any flash used on your website you will have to fix your site so IE users will be able to view your web site.
Here is what I saw on DIGG....
"According to information reaching eWEEK, Microsoft announced plans during a conference call on March 28 wherein Redmond officials reiterated the need for Web pages to be completely re-authored to avoid possible disruptions as a result of major changes to IE 7 as a result of a patent dispute"
[url=http]LINK[/url]
Also, I found a great link (Blog) that explains whats up and how to fix your site.
[url=http]Click here[/url]