You need to have the black rain folder in your Themes folder lol...
Screenshot: There should be a print screen (prt scr) button somewhere - that should work, then press crt + v in paint to paste it

. If you're still having trouble, I used to use this on my old PC because it didnt have the capability (and I know others who have that issue so I saved it):
http://www.box.net/shared/ko1b64gak8 You just open it and click the "take picture" button

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If no one else can help you tonight, I'll be back tomorrow. I really need to head to bed - I'm tired and sick

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Please check:
-It has no enable/disable buttons in admin that may have been missed.
-It works on the Core (SMF default) theme.