Document's Page Set-up for Printing : Microsoft Word 2003

File

Edit

View

Insert

Format

Tools

Table

Window

Introduction - Microsoft Word 2003 Window - Selecting Objects - Page Setup - Print - Find, Replace & Goto - Cut-Paste & Copy-Paste - Header & Footer - Clip Art - Fill Effect - Format Font - SubScript & SuperScript - Bullets & Numbering - Border & Shading - Spelling & Grammar - Synonyms - Protect Document - Macro - Customize Toolbars - AutoCorrect

This option is used to set the margin(blank space) around text in the  page.
-File - Page Setup
This will open following dialog box:-
It has three Tabs:
Margin : to set the margins of the page. We can increase or decrease the margin from the top, bottom, left, and right. By default top & bottom margin is '1' and left & right is 1.25. 
It also have the orientation of the page like landscape(to print the page width wise) and portrait (length wise).
Paper : to select the paper type or size of the paper.
Layout : It has the setting of selection and Header & Footer
-Select the desired options and click Ok.