For Command and Conquer Gold there is a cheat code that you can build 2 refineries for 1000 credits or it applys with any other building or unit. You start the building and then press r to surrender. wait about 1 min then hit cancel. Then (if building)place the building, then start another building and do the same by hitting r. Then hit cancel (after 1 min) then it ought to be done! This code has been tried several times.