The release of Internet Explorer 8 RC1 is just around the corner and fortunately there is a significant number of people and organization that want to release their own customized version of IE8. Luckily Microsoft publishes a tool that can let you easily customize IE8. The tool is called the Internet Explorer Administration Kit (IEAK) and its freely available. There are already quite a few blog posts about the tool itself so I don't want to rephrase all that if you are new to IEAK just go to the IEBlog and read the post by Jatinder Mann.
The current published version of the IEAK is the Beta 2 version that corresponds to the exact same version of IE8. So in order to prepare your customized IE8 package with RC1 bits for those that already have access to the IE8 builds > Beta2 there is no corresponding IEAK to those builds. However there is an easy workaround to use the Beta 2 IEAK with the newer bits. Just follow those 3 simple steps and you are done.