datetime is a datatype for storing a date value that includes the time. What you are asking for is the date ONLY (no time), and in a specific format. The first of those can be accomplished with the DATE datatype, and much more efficiently than datetime because date is 3 bytes and datetime is 8 bytes per.
For the second thing, you get a date out of the table in a format based on things such as SET LANGUAGE and SET DATEFORMAT, which can be found in Books Online. See also the CONVERT function in BOL.
I do note though that making a date pretty on OUTPUT is almost always best done OUTSIDE the database, in the presentation layer (whatever that is for you).
Kevin G. Boles
SQL Server Consultant
SQL MVP 2007-2012
TheSQLGuru at GMail