Urgent Help Using EXCEL 2007?

Basically. I have a lot of information on my spreadsheet. Its about the temperature in different years. Ive got the average temp. for each month of each year from 1956-2005. Ive also got a list of the average temp of the whole year. I want to make a scatter graph with the yearly averages. With the years along the bottom and the temps. along the side. PLEASE HELP!. THANKS SO MUCH!
Xoxo