WebBrowser, flash and Vista

I'm developing a win app, I'm using a WebBrowser control because a html editor was needed and we found a good one for asp.net. The problem is that when I put a swf file it just shows a small white box, and this only happens in win Vista, in XP or 7 everything's alright.

When I try to open the page created with the html editor (in IE7 on vista) the yellow box in the top appears and I think is because of IE开发者_高级运维7 configuration.

Any light on this one?

Thanks in advance for the help. Ariel.

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Do you run the files locally? Then this is normal.