Starting with Internet Explorer 7 (IE) the security options often times cause a dialog to display when Starting Visual ChamberWare which you have to verify you wanted to do, even though you click the icon yourself (Microsoft, protecting users from Microsoft!!)

You can likely suppress this behavior, in Internet Explorer select:

1) TOOLS/Internet Options/Security

2) Click "Local Intranet" Click the "Sites" button

3) Uncheck "Automatically detect intranet network"
    (the other three options should be check by default)

That should stop the annoying new MS message