[users] Can't set page numbers on open document

[Meg Parkes]

I am using version 2.0 of OpenOffice.org and my problem is:
I can't set page numbers on my open document. 
I have tried the help page instructions:
insert - footers... but there is no box to choose position, type of numbering 
and no number appears in the footer box. 
Please advise.
With thanks,
Meg Parkes