Here are the subjects of a few of the many links on that web page link
Solution. How to uninstall Internet Explorer 8 Beta 2. To uninstall Internet Explorer 8, follow the steps for the version of Windows that you are running
Uninstall IE 8 Beta in Internet Explorer Beta
I am also running Vista SP1 and IE8 beta 1. Beta 2 has just been released, but it says I must first remove beta 1. Well, how do you do that?
How do I remove IE 8??? It does not appear in manage programs. If I can get ... IEBlog- Upgrading to Internet Explorer 8 Beta 2 [install - uninstall]: http://blogs.msdn.com ...
How do you remove Internet Explorer 8 Beta 2 from Vista. It is not in the programs list!?"
Not playing with the beta myself....so can not add personal suggestions