sorry i didn't got wt you mean...but search via google.com i've lost my key once before and i've tried google.com and i found it LOL google.com is everything ..
I think he's looking for a high resolution background that will stretch over his 4 monitors. I have two, and I use one that's an abstract pattern that dosent really have clear divisors, so I repeat it on both monitors.
Read this man http://www.nsaneblog.com/blog/?p=298 It allows you to create you're own multi-screen wallpapers.
http://home.officesnapshots.com/2008/02/29/too-bad-they-couldnt-afford-a-chair/ click there to see what i mean. in the picture the monitors have a different image spread out over the two hwoever the images go together. i have seen pictures of other work stations like this with outdoor scenery and such spread out.
you may try http://www.dualscreenwallpaper.com/ and hit up google with dual screen wallpaper, im sure youll find what you are looking for