InfoPath Dev

Thanks for responding, Hilary. Since posting my question I downloaded Office 2010 and it was much easier to figure out how to do the conditional sums. However, I do have another question that's popped up. The instructions in Help are really useless, and there isn't much available on the internet about Infopath that is geared toward newbies ...

Trying to design my first form, an Employee Absence and Holiday Tracker. In summary, in the repeating table, the user enters a date (date picker), selects an Absence Type from a drop-down list, and types the number of "day units" taken (value limited to 1.0 or 0.5 for each date/row). For his post, I'll deal only with Absence Type = ...