Sending data to Fancybox via checkbox?

[eluser]Wayne Smallman[/eluser]
Hi guys!

I'd like to trigger a Fancybox window with an iframe when the user clicks a checkbox.

However, name-value pairs need to be sent (a URL, effectively), for CodeIgniter to do its thing.

I've been looking at an earlier discussion on a similar topic, but I'm not very adept with jQuery, and what I've managed to accomplish so far is my upper limit.

Any advice would be much appreciated!