If they are not in your starwars galaxies folder under program files, they will be in the directory that you installed the game (if you changed it). If they are not there, then you didnt take a screenshot correctly. If you absolutly sure you took the screenshot right, then use your search or find commands in windows to scan your HD for files containing the word screenShot or .jpg or both. If that didnt find it, you didnt take a screenshot.
this message is in BlueCrayon.