place "CoD .6 test balance.big " into the your zero hour main directory
My Computer --> C:\Program Files\EA Games\Command and Conquer Generals Zero hour\

or for first decade users:
C:\Program Files\EA Games\Command & Conquer The First Decade\Command & Conquer(tm) Generals Zero Hour


to unistall just delete "CoD .6 test balance.big " from the directory you put it in