Although my Brooks racers wouldn't be too bad on their own, I have been using orthotics in them. So yes starting from ground zero.
Only planning a little bit of running, just to top up on cardio levels from time to time. 30m-1hr a week perhaps.
Have emailed Pinnacle to see what they've got as I'm keen to try before I buy, otherwise will try Running Fit.
then you should be fine
The Nike Free 3.0's I can vouch for as wel..