For screenshot:
Press Print Screen -> Close the game -> Open MS paint -> Paste -> Save as .JPG -> Upload the file at imageshack -> Copy the forum link on the right -> Compose a message and paste the forum code.
or with Fraps
open Fraps -> Configure print screen key -> Open the game -> Press that configured print screen key in game -> Close the game -> Go to fraps directory and search for image folders -> Upload the file at imageshack -> Copy the forum link on the right -> Compose a message and paste the forum code.
Easy as 1,2,3!
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