India Four Two yes good fun that warning, main thing is to make a note of anything you do in there so you can undo and only do one thing at a time.
Meanwhile back to your problem, try going to
Proxy Guy (if your IP will let you) click in the white box to get the URL block up (if it's not already there) and paste that URL into it and press go and see if you can then see the picture, if you can then it's probably your IP is blocking imageshack for some reason.