Need one cell to reference just the month from another date-formatted cell

I'm trying to link two different budgets into a third spreadsheet. The final step I'm attempting to accomplish is have an if-and statement reference just the month from a date-formatted cell. One of my departments tracks their budget on a daily basis, i.e. 11/2/2009, 11/3/2009, etc. rather than just 11/2009. I want the if-and statement to return the budget from all days in a given month so i can apply the formula to the whole year, broken down monthly too. I saw a question similar to this one but didn't see any responses so I'm not sure if it can be done. Thanks for the help!