Need help with SQL

I have the following query that list all installs of the C++ 2010:

SELECT arp1.DisplayName, arp1.DisplayVersion, arp1.InstallDate, c1.Name AS 'Computer', id1.[OS Name], id1.[OS Type]
FROM vRM_Computer_Item c1
JOIN Inv_AddRemoveProgram arp1 ON c1.Guid = arp1._ResourceGuid
JOIN Inv_AeX_AC_Identification id1 ON c1.Guid = id1._ResourceGuid
WHERE arp1.DisplayName LIKE '%Visual C++ 2010%'
Order by DisplayVersion

I need help to display only unique "DisplayVersion" just to see what i have out there.

Thank you.