SSRS 2008 User's settings margins when exporting to Word

Hi,

I am designing the report in VS 2008 using SSRS 2008 R2. I set the report margins to Left=0cm, Top=0cm.

I should  set user's settings for margins Left and Top  for export the report from my web application to Word.

Can someone tell me how to do this for export to Word? We badly need this for our report.

Thanks in advanced,
Viktoriya