My experience is with XP and the 42.86 or 43.45 drivers, so I'll assume you're using those. My clone option is accessed by entering display properties, settings, advanced, ti4400 tab, and then clicking on device selection on the side window that pops out. There should be 4 options- standard(dualview), clone, horizontal span, vertical span.
Everything but dualview works for me with my tv connected to the svideo out of the card. The nview wizard just appeared automagically when I was installing everything for the card, so I'm not sure how to "invoke" it if it didn't for you.
One fellow told me of a way to enable tv-out with dualview, too, but I haven't been able to find the option he said to enable. I'm not at that computer now, so I'll have to look harder later this afternoon.