Get month and year from a datetime in SQL Server 2005
select datepart(month,getdate()) -- integer (1,2,3...),datepart(year,getdate()) -- integer,datename(month,getdate()) -- string ('September',...)
If you mean you want them back as a string, in that format;
SELECT CONVERT(CHAR(4), date_of_birth, 100) + CONVERT(CHAR(4), date_of_birth, 120) FROM customers