40oz

I know that this has been talked about already but I can't seem to find the postings. I have Windows XP Media Center Edition on two cds. When I go to install them it doesn't ask me for the second cd. So presumably I have the wrong cd key...But I purchased this version. So what I am curious about is integrating the MediaCTR.cab file into a new copy of my windows xp cd. Since I can't seem to find the posting could someone either post a link to it or help me out a little? Thanks