Thanks to Andrew and Steve for very quick and easy to follow instructions...

I was sure that I did it differently in the past which seemed more complicated than what has been suggested and worked this time...

The instructions were:

to be able to get the A4 paper default to "stick" by setting it from within the Format > Document menu. (click on Page setup, pick the settings you want, click on OK, then click on the "Default..." button to lock it in)

For those who know easy.... it would be easier if this was in the basic page set up OR when you register office as an Australian user they know were are not using the US paper format...

Thanks again for your prompt attention to my problem,

Phil