gimp - How can I make a screenshot look like a photograph taken of a real surface?

Possible Duplicate:
How to get this blur texture effect in photoshop?

I'm starting from a plain old screenshot, and I'd like it rotated in 3d, with more distant parts more blurry. Is there a simple way to achieve this effect? I'm mostly using GIMP but tricks with any other tools would also be appreciated!

The result of what I'm trying to achieve:

Answer

Your example looks like a real photo (amongst other things, the moire is a give-away). Sometimes the best approach is the most obvious one.

1. Display the image on your screen.

2. Take a photo of it.

Honestly, that's a better way to go than spending hours using digital effects and creating something that's likely to look unrealistic.