I think maybe I explained my current report wrong.
Let's say I have three fields in the report: start date (Start_Date), end date (End_Date), and total sales (Total_Sales).
In the report footer, I am summarizing via two separate running totals two different totals. One is all of the Total_Sales over time and the other is the Total_Sales for just this year (based on the End_Date being 2008).
The first running total is a piece of cake - pretty straightforward. But, how do I compare the system date to the End_Date to do a running total of just the numbers for this year?