Use Google and Yahoo search to get the best wallpapers of your desired size.
For images larger than 1024X768 resolution.
I never knew that some images could be so detailed and of so good quality.
See the simple tutorial..
Go to Google.com
Click on images Tab
type the name of the name of person or thing you want pics of.
Now to see the best quality images click on the drop down menu saying
Showing- and select Extra large
Same trick works in yahoo
Go to image tab in yahoo and select..
Wallpaper for searching images of size – 1024 X 768..