Hi,
Open your rdlc file in Visual Studio, once loaded in the report designer, goto the menu Report, Reports Properties, and set it to what ever you want..
Another way to do it is to open the rdlc file in notepad and change the page layout settings manually. rdlc files are xml and it is very easy to find the correct nodes.
for example:
<Page>
<PageHeight>29.7cm</PageHeight>
<PageWidth>21cm</PageWidth>
<LeftMargin>2cm</LeftMargin>
<RightMargin>2cm</RightMargin>
<TopMargin>2cm</TopMargin>
<BottomMargin>2cm</BottomMargin>
<ColumnSpacing>0.13cm</ColumnSpacing>
<Style />
</Page>
Is that answering your question?
Valery.