I had a Blackberry, so I switched to VZW's 150MB plan. They won't let me change back to unlimited until the end of the bill cycle (12/28), so I had to turn off data to avoid going over the allotment.
In the place where I turned it off, there are three options:
I have all three deselected.
To download apps from the marketplace over WiFi, it says I have to turn on background data. Will this burn into my data allotment at all?