Saxat från:
http://www.macosxhints.com/article.p...1844&lsrc=osxh
To change the default location for screen captures so they get saved in a specific location instead of cluttering the desktop, you need to use the defaults command in the Terminal to change the path. It can be done like this:
1. Create the folder in which you want the screen captures to be saved in the location of your choice.
2. Open a Terminal window and type this:
defaults write com.apple.screencapture location /Full/Path/To/Folder
3. Log out and log back in, and the change will have taken effect.
Note: You have to put in the path properly. Using ~ to indicate your home folder will not work. The path must be entered starting from the root of the hard drive. For example, if you wanted to save them to a secondary partition, your path would start with /Volumes/SecondPartition/.
