WPMU | Invisible Redirect Not 301 or 302

Ok. I am hoping there are some WPMU mega nerds out there who can help me on this.

First, let’s just assume I have all the right reasons for doing what I am. Just go with it and not ask… “Is this really what you want to do” or “That doesn’t make sense.” The explaination is LONG and involved for my reasoning. But, just trust me.

What I am trying to do:

Blog A: https://superblog.com/myblog
Blog B: https://myblog.com/special-page/

I am trying to make it so… when visitors go to Blog A’s URL they will recieve Blog B’s URL. I want it to be INVISIBLE in the visitors web browser URL bar. I know how to do a 301 and 302 redirect with .htaccess and in httpd.conf files. When I try to setup any INVISIBLE redirects (otherwise known as cloaking or masking of URL) they just redirec the visitor to Blog B instead of displaying Blog B’s content with Blog A’s URL.

Make sense?

Now, I am using WPMU 2.9.2 with Domain Mapping Plugin. I don’t want to mask entire Blog B site on Blog A, just the one page listed above for Blog B.

Thanks in advance!
-JFK