Row Header Value

Hi All ,

My SSRS Report table look's like below  :

i want to add row headers as per the value in the Product Column  . So if the products are in windows 2008 ,linux ,linux 99 ,windows 8 the row header should be SSRS ,if the Product Column values are in Windows 2000 enterprise,windows 7.,linux enterprise the row header should be BI

Kindly help it's very urgent

Thanks

Priya