Part 1 covers changing page size, importing many image files at once to work on, exporting finished work, and using Xara Picture Editor to resize and crop the image. If you can't be bothered making it, you can also download the desktop background and other freebies made with Urgent Artwork from my blog 8wordmission.blogspot.com
All art elements in this tutorial from urgentartwork.com/theoffice.htm
(Coming soon: Part 2, how to make a calendar for your monitor desktop background)