Graphs and Microsoft Word XP Help For School Project?

Hi all I know that this is a silly question but I am doing a school project and I need to insert different kinds of graphs. I need a pie chart, a regular line graph and a comparitive graph. How do I insert one of these into my project? Better yet how do I creat one of these? Is there some place where I can download graphs? I have done stuff on Excel but I have never had to do something like this on word. Thanks in advance for all the help!!!!!