transpose columns to rows

I have a table with week 1 to week 52 columns that holds data for no: of days worked in each week per employee.In SSRS I want these week1 week2 fields appear as rows with no:of days worked against these rows.[quote] no:of days workedweek1 6week2 5week3 4week4 3[/quote]I want to further group these weeks for each month also for a year, but Initially I would like to know how to achieve above results.Thanks