Can you recommend me a specific application that takes screenshots?

[Pak_Track]

Tell the target that he must turn off his AV or add this file to the exceptions list. AV's are stupid anyway.

[Code.Illusionist]

Take a look at this: http://app.prntscr.com/en/index.html

[0E 800]

Pretty nifty app. Gonna give it a test. Thank you Code.Illusionist.

[Kulverstukas]

If anyone cares, this was the project for a useless prank app to take a screenshot and show it.

http://9v.lt/blog/delphi-fullscreenshot/

[BinarySupremacy]

I use spy_agent. crack version.http://kickass.to/spytech-spyagent-stealth-6-2-crack-included-thegreektracker-t4222811.html

[proxx]

scrot is a very decent tool which as far as I know is linux only, not sure if port/clone exists.

Other than that look at this for example:
http://docs.oracle.com/javase/6/docs/api/java/awt/Robot.html#createScreenCapture%28java.awt.Rectangle%29
I am not sure what your purpose is but something like that can be written in minutes, probably stealthier (if that is of any importance).

If your tool doesnt write away the file when sheduled you are probably fucking something up.
One way to catch it is to run it in a BASH/PS file and pipe the output to a text document.
Probably permission .. its always freaking permissions

God I hate that britney spears avatar thingy.