After avidly playing Civ III C for like the last 6 months (why can my female roomate never relate to my discussion of the merits of playing the Ottomans

) I finally decided to download some new scenarios... ok.. here is my make me sound like a newbie question...
HOW DO I INSTALL THEM...
I downloaded Procifica's American Civil War pack.. the directions said, once you zip it into your CIV III directory it should be playable... how?
I scoured the FAQ, but when I start up Conquests, it can't find the file, its not listed as an option on ANY menu, I even moved the BIQ file over into the scenarios directory, it then goes in the CIV-Content start, and the map shows, but it cant seem to find any of the other files...
OK, short question long and then shorter... anyone got a quick FAQ on how to install then PLAY the downloadable scenarios... the FAQ only talks about installing new units
thanks in advance...