Do you mean you want to enlarge the whole page, or do you mean you want to selectively enlarge the print, while keeping the graphics and layout the same? You can do the first, but not the second.
In the Print Setup or Page Setup dialog box look for an option to enlarge or Scale the document, it may be in Advanced settings or Graphics settings. Set it to 120% or whatever you want to scale it to.
Your other option, only if the document you have can be opened and edited in something like Word, is to select the text of the document and choose a different type size or font.
I hope this helps!
Brett M,
Windows Outreach Team