Two ways to do it:
Method #1
First open up your swkotor.ini file located in your main SWKotOR directory. Under the header [Game Options], make sure you see EnableScreenshot=1 Save and close the file. Launch the game. At any point during the game you can now press the Print Screen button and a .tga file will be saved in your main SWKotOR directory. You'll need to convert the .tga to .jpg or .gif to upload to the web.
I personally don't like having .tga files fill up my swkotor directory, so I use the following method.
Method #2
First open up your swkotor.ini file located in your main SWKotOR directory. Under the header [Graphics Options], make sure you see AllowWindowedMode=1You may have to add this line. Save and close the file. Now during gameplay, you can press Alt-Enter which will make the game change from Full Screen mode to Windowed Mode (and back). Change to Windowed Mode and press Alt-Print Screen. This will capture the Window as a screenshot on your clipboard. You can then use Microsoft Paint or whatever image editing software you prefer to Paste as New Image. Save as .jpg or .gif to upload to the web.
Don't forget that Pause (space bar) is your friend when trying to get screenshots.
Information source: Kitty Kitty's thread (
http://www.lucasforums.com/showthread.php?s=&threadid=122058)