Shaun,

On NSW go to the race you are interested in - at the bottom of the page where it lists the pool amounts you will notice Quinella and Exacta are actually links (ie. underlined in green) - click on them to go to the approximates page for that pool.

On the WA site again on the betting page for the race you are interested in there is a button at the bottom of the page which says "Display Quinella Dividends".

On ACTTAB page there is a link at the bottom of the race page that says "Quinella Odds". Note that ACTTAB is linked with Supertab (TABCORP) for Quinellas so the Quinella div that ACTTAB is showing will be the same as Supertab.