If you can see some text above showing your current Flash version, you have Flash 5 or greater installed, however you must have Flash 8 or greater for FlashMeeting to work. If you get a broken icon or no text appearing you either don't have Flash installed at all, or Flash 4 or an even earlier version, and FlashMeeting will not work - install Flash 8 or greater.
If you need to update your Flash Player go to www.adobe.com.
Click here to check your port connection - This is a handy page based at Adobe that will check for some of the ports required. If at least one of the ports report as 'successful', when you next load FlashMeeting press the 'clear saved ports' button and refresh the web page, to have FlashMeeting search for a required port again.