page setup in vba so that the workbook prints the same everywhere.

I have a workbook which I always want to print the following way:
Pagesize = A3
Orientation = Landscape
Margins 0.75 on all sides
Page fitting = Fit to one page tall by one page wide.
But when I take this workbook with the given settings to another computer, these settings appear as changed. I have to do everything once again. Is there a way to do this in vba so that the pages print the same everywhere?

Try recording a macro of you making the changes and see how you get on.

I don't have an A3 size printer set up on my computer. so if I give xlA3 as page size, it causes an error. This workbook goes somewhere else to get printed. That's why I am asking. Help me out, please.