Your description is way too general to be able to give you a specific answer. But from your limited description, it sounds like using MATCH to find the row number and using it along with the column number you want to get your value from inside the INDEX function and putting that inside the SUM function might be what you are looking for.
Please Note
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One thing you must keep in mind when you ask a question in a forum... the people you are asking to help you know absolutely nothing about your data, absolutely nothing about how it is laid out in the workbook, absolutely nothing about what you want done with it and absolutely nothing about how whatever it is you want done is to be presented back to you as a result... you must be very specific about describing each of these areas, in detail, and you should not assume that we will be able to "figure it out" on our own. Remember, you are asking us for help... so help us to be able to help you by providing the information we need to do so, even if that information seems "obvious" to you (remember, it is only obvious to you because of your familiarity with your data). To sum up... we only know what you tell us, nothing more.
