Is this proxy setup possible using Apache?

Hi all!

I would like a proxy setup with the following qualities:

Generally pages are proxyed the normal way using mod_proxy.

If the file part of the URL is a specific text the page returned from
the proxy is not the specified URL but another one on
a different server setup by me.

Example:

www.somesite.com/somepage.html is proxyed as
www.somesite.com/somepage.html (normal proxy)

www.somesite.com/myspecificpath.html is proxyed as
www.myremotesite.com/mypage.html (proxy to other site)

and www.someothersite.com/myspecificpath.html is proxyed as
www.myremotesite.com/mypage.html (proxy to other site)

Is this possible using Apache ?

/Morten Iversen

Ps:
I have tried to come up with a solution for this setup for a couple of
days now from the mod_rewrite and mod_proxy manual, but no luck.
As far as I can see mod_rewrite allows me to map a remote server to a
local path. What I want is really to map a remote server to a remote
path.

I dont want to give up on this one - please help !:)