[Request] Dengeki Stryker Wallpaper

[Silvachief]

Hey folks. First time posting, so i'm not really sure where to ask this.

I'm looking for a wallpaper featuring the visual novel Dengeki Stryker. I've tried looking elsewhere on the net and have been unable to find any pictures of decent quality (CG packs i've found have only been 800x600 or so).
Is anyone able to help me with this?

If it helps at all, my screen resolution is 1440x900, though I don't expect any of the pictures to be that exactly ;)

Ideally, I would like a picture featuring the main characters, such as these:

http://tinyurl.com/ao3hqcy
http://tinyurl.com/avpdovn

Thanks for your time!