There are four ...the ones you talked about, plus one at the drivers end..the one at the driver's end connects the transmission to the fenderwell, kind of the opposite of the one at the timing belt cover. You'll have to remove the air box to get to it.
The front and the rear ones are most easily accessed from underneath the car. When you replace them, you will buy the mount, which includes the steel ring component as well as the rubber interior part. The one on the driver's end at the fenderwell looks somewheat similar to the ones in the front and the rear, while the one at the passenger end is a completely different design.
Hope this helps.
