fn_helpcollations()
You can use the fn_helpcollations() function to return the list of all collations that are supported by Microsoft SQL Server 2005If you run the below sql statement you will get the list.
select * from fn_helpcollations()
SELECT Name, Description FROM fn_helpcollations() WHERE name like '%Turkish%'
In SQL Server 2000 ::fn_helpcollations() function is the equivalent function of fn_helpcollations() for SQL Server 2005
SELECT Name, Description FROM ::fn_helpcollations() WHERE name like '%Turkish%'