Sorry, that's a Vizard 4 command. The following should work for Vizard 3:
Code:
import viz
import vizact
import steve
viz.go()
steve = steve.Steve(pos=[0,1,7],euler=[180,0,0])
court = viz.addChild('court.ive')
subWindow = viz.addWindow()
mask = viz.addNodeMask()
steve.setMask(mask)
viz.MainWindow.setCullMask(mask)