SQL query for a specific date

I am not very SQL knowledgeable, and something that seems like it should be very simple has me stumped.  I have a query that I run normally on the current day using 

and T0.DocDate = CONVERT(VARCHAR(10),GETDATE(),102)' 

to limit the results to the current day.  I need to run the query for a specific past date, but am having no luck.  I currently have it trying,

and T0.DocDate = "2014.03.21 00:00:00.000"'

which runs successfully but generates no results.  I am hoping is a simple fix that you can point me to.  Your help is appreciated.