Auto-Adding BB Code?
 

Hey,
So basically I've setup a custom BB Code as follows:

[itunes]http://itunes.apple.com/app/consume-mobile-isp-packages/id404175354[/itunes]

On my forum this will show the iTunes App Icon, screenshot and affiliate link quite neatly...

Now what I'd like to be able to do is have it automatically do that whereby it essentially replaces "http://itunes.apple.com" with "[itunes]http://itunes.apple.com" then adds "[/itunes]" at the end of the word.

http://itunes.apple.com/app/consume-...es/id442153222

Can anyone reccomend any plugins to allow me to do this please? I've been looking at the auto affiliate link stuff but this seems to just to the find + replace on single words, theres no capacity to add a closing tag?

Cheers,
- Adam G