Print Setup, then Page Setup tab

[pepenacho]

This will probably seem trivial and obvious.

I am trying to format a fairly large visio file. All drawings come out on
four pages rather than one. I am trying to format the page.

Most of this can be taken care of in the Page Setup tab, under Print Setup.
My problem is that the Page Setup does not allow me to change the options,
it's "frozen" can't click anything.

Any idea what's causing that.

It's a visio 2003 file saved for 2000. I'm working in 2000.

Thanks,
pepe