I am trying to set up a personal budget. I want the budget to sum the
amounts for a certain type of expense, say groceries, that lie within a
certain time period, say the entire month of August. I have tried using
VLOOKUP, but it only looks up one value and will not sum them. I'm not sure
if I need to use array formulas, DFunctions, or if I should be using another
program such as access.

Thanks for any help!