The massive collection of worksheets and workbooks now occupying my "PROfile" folder will eventually become an Access Database App. By converting the summary sheets into queries, I will finally get the power to backtest using date ranges (or draw numbers).

Updating the sheets is already a formidable challenge, but I am essentially looking at an exploded database with multiple queries... I didn't know what I wanted from Access before, but it's all becoming clearer now...