To set up multiple Google Analytics tags on the same page you need to use the _uff = false; command in between the unchinTracker() calls to reset the tracker for the next account. The urchinTracker() function will send information on the page visit off to Google Analytics.
You can do this for as many accounts as you like, but be aware that there will come a point when there will be a noticeable delay on the site when the calls to Google Analytics are done so don't do too many.
_uff = false;Instead of
_uff = 0;However, using the variable false doesn't work! Thanks for the tip.