Who said fight a ground war?
Massive attacks to destroy production facilities, and let it fall into chaos.
At most, help the Kurd in the North.
Iran won't fall into chaos. It is a cohesive nation whose people identify strongly as Iranian. Again, the Bush administration is relying on tiny dissident groups who come here so we'll pay them to tell us what we want to hear. If they enjoyed popular support they'd be in Iran, not here.
The price of oil, btw, will skyrocket. And unless you're willing to bomb the place into glass (and we aren't), all the bombs and planes in the world won't hold territory.