You can use Windows XP to zip files very easily. First open up Windows Explorer (windows key + E).
Go into the folder and select all the files you want to zip. Right-click the files, select "Send To" and "Compressed (zipped) Folder".
A zip file will be created in the same folder. Look for the icon with a zipper.
You can now upload the zip file to PhotoZer and make a cool wallpaper.
