Hi
Have a look at ROLLUP, I think this will do what you want.
SELECTComputerName AS 'Computer Name',
SUM(BlackWhiteTotalCount) AS 'Total B&W Pages',
SUM(FullColorTotalCount) AS 'Total Color Pages',
Name AS 'Printer Name'
FROM [dbo].[db_name]
WHERE ComputerName LIKE 'ComputerName%' --There are 2 computer names that I'm looking at
GROUP BY ROLLUP (ComputerName, Name)