Lloyd,
If you're using IE9 go up to the top of the page and click on the icon that is suposed to look like a torn piece of paper. That is a "compatibility" icon that will make IE9 think it is IE8, and your text won't disappear when you click on "post."
Is this what you're trying to ask a question about?
http://www.modelrec.com/search/product-view.asp?ID=8267
If so, the information you need is probably somewhere on the MRC web site.