data type mismatch when comparing dates in MS-Access

[Anakin]

I have dates stored in an MS-Access table in the 'General Date' format.I'm trying to create a query that returns records between a specific date range (all records from March 2010) however I encounter a 'data type mismatch in critera expression' message.Here is my statement;\[code\]SELECT Loan.loan_datetimeLeant, product_name, [product_artist/director], product_category, loanItem_costFROM Loan INNER JOIN ((Product INNER JOIN IteON Product.[product_id] = Item.[product_id]) INNER JOIN Loan_Items ON Item.[item_id] = Loan_Items.[item_id]) ON (Loan.[cust_id] = Loan_Items.[cust_id]) AND (Loan.[loan_datetimeLeant] = Loan_Items.[loan_datetimeLeant])WHERE Loan.loan_datetimeLeant >= '01/03/2010' AND Loan.loan_datetimeLeant <= '31/03/2010'ORDER BY Loan.loan_datetimeLeant;\[/code\]I have tried variations on the date format (mm/dd/yyyy, dd/mm/yyyy 00:00:00)