This is a small and simple single player mission for ZH, which was made mainly to show how to make classic CnC style engineers in Zero Hour via a map.ini.

For the theory behind it see this thread in Deezire:
http://www.deezire.net/forums/member-writt...html#post100272

Basically you change a hijacker from hijacking VEHICLE to STRUCTURE, then make sure the buildings you want it to capture all have an AI module and KindOf CAPTURABLE.

In this mission you play as GC Stealth faction. The Americans have captured your base which is in the north of the map. The first thing to do is use the 3 hackers to capture it back by sending them into the buildings. Then build up your forces and capture or destroy the rest of the enemy.