I can do that. It will take 2 hrs to setup and test the cookie part. That's $100 US payable in advance. (see my PayPal link in my sig at the end of this post).
As for using it with jQuery.noConflict(), that's simple as long as IPB allows you to setup the order of scripts in the head as you see fit. If on the other hand you have to let it put its scripts first, it can get tricky, might even be impossible. Also depending upon which library IPB uses, it might have to be updated to a more recent version, or might be incompatible with jQuery even in noConflict mode.
But as long as there's none of those problems, just put the external script tag for jQuery before all scripts followed by:
followed by your script that use jQuery. And then your other library and its scripts. Then later where you do like:
And it should be fine.