Hi Matthew,
Unfortunately you're still on NT6.
In NT7 (and even more improved in NT8) is an "event" system which flows through the browses, forms, and browses on forms and so on.
So in NT8 it "just works". In other words you treat the browse as a "form field" - and on the reset list (of the form field) you can then specify other fields on the form (ie the total fields).
In other words you set the "relationship" between the browse, and the totals, and the rest just happens.
In NT6 though it's quite hard to do - and requires both an understanding of the code flow, and some nifty embed code. (It's hard - which is why I changed it for Nt7 and made it easy.)
cheers
Bruce