First, I recommend that you create a new "family" (in Pharaoh/Cleopatra) for the downloads. (I created a family called OTHERS.) It's OK to put downloaded cities in with your family's cities, but I prefer keeping them separate.
The file wongseng-hamunaptra.sav should already be extracted (from wongseng-hamunaptra.zip). Put it in the desired family folder, which will be something like C:\SIERRA\Pharaoh\Save\"family name". Start Pharaoh/Cleopatra, select that family, click on "Load Saved Game", select "wongseng-hamunaptra", click on the check mark after "Proceed?", and you should see the city.
If you download a .map file instead of a .sav file, it should be put in the Maps folder, which will be something like C:\SIERRA\Pharaoh\Maps. Play a .map file (from any family) by selecting "Custom Missions" instead of "Load Saved Game".
[This message has been edited by Brugle (edited 03-27-2004 @ 12:19 PM).]