Also
Lets say it looks like this
HTML Code:
[url=http://imageshack.us][IMG]http://img62.imageshack.us/img62/8313/ef7e103c3js.jpg[/IMG][/url]
If you remove the very first part, and the very last part, it will remove their annoying link that they post above your picture.
HTML Code:
[url=http://imageshack.us][IMG]http://img62.imageshack.us/img62/8313/ef7e103c3js.jpg[/IMG][/url]
So basically all you want is
[IMG]http://img62.imageshack.us/img62/8313/ef7e103c3js.jpg[/IMG]