FF everything OK, IE no videos

Hi all,

I'm using this module for posting my own you tube videos onto my website.
Problem is that when i add a video, it wont show up in IE 6 or IE7.

I'm a fulltime firefox user, so i did not noticed this, but one of my visitors told me he cannot see something (IE7) i asked another guy, and also he does not see the videos (also IE7) when i look in IE6, i cannot see anything! but in Firefox 2 they are working.

Please assist!