datetime in label

 Hi, I'm from Argentina,
I have a label  that calls a datetime data type. The format is: "mm/dd/yyyy hh:mm:ss".
Here's the label code:
lblComienzoItem.Text = cPub.creacion.ToString();
cPub is a local variable that calls a specific row in the SQL Table and "creacion" is a datetime column in that SQL Table.
Instead of showing (example) "05/25/2009 11:30:00 a.m".... I would like to show in the label: "Monday 05/25/2009 at 11:30:00 a.m.".
How can I add the day of the week and the word "at" before the hour??
Thanks !!

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