jquery

Hi,
I would like to use jquery on/in page content and am wondering if someone can tell me the correct way to set this up for the blogs MU theme. I would like to use jquery Tabs to hold content on a page; I can get it working on an HTML page but am unsure of how to best get it working in WP.

Actually as I write I'm wondering is there a way (perhaps a plugin ) to allow all sites use jquery in posts??

Thanks
Shane