num3rouno, sorry if the ZD vs ZCS description was too basic but I can't assume on your first post

For ZD, ZCS code is used quite a bit, but there's also a lot of things substituted where more applicable to a desktop situation (one example would be
Apache Derby).
I would suggest viewing //depot/zcs/FRANKLIN/ZimbraOffline/build.xml as it's a good to glance through so you understand what's going on.
Building Zimbra using Perforce - Zimbra :: Wiki >
Franklin README - Zimbra :: Wiki
Zimbra Desktop wiki sections:
Building on Linux - Zimbra :: Wiki Building on Macintosh (OS 10.4.6+) - Zimbra :: Wiki Building on Windows (win32) - Zimbra :: Wiki
interways, I'm not sure what you're saying, I'm currently looking at the the public perforce cache (codes.zimbra.com:2666) //depot/zcs/mainOrFRANKLIN/ZimbraOffline/jetty-ant.xml which was updated on 2008/05/20 (today)
-That's hourly updates by the way.