Don't know about software for a lap top but here are another two options.:
ScanGaugeII 3-in-1 Auto Computer (Improve your Mileage!)
UltraGauge OBDII Scan tool & Information Center
Both will show error codes and are capable of turning those off.
The scangauge was popular a couple of years back and is said to be totally compatible with Oz holdens.
The Ultra gauge is a more recently introduced unit.