I need help with a text summing formula that incoperates two criteria over two worksheets. On worksheet One I have an account number in cells A1:A600, on worksheet Two I have corresponding account numbers in A1:A5000 (each account has multiple entries on this second worksheet). In addition on worksheet Two there is a question in cells B1:B5000 for each account with a Y or N answer in cells C1:C5000. I need a formula to enter on sheet one that will return the sum of Y answers for the account I specify in the formula.