As your using 2010 you can add the Date Picker which gives you a drop down and you can select the date.
As per previous reply, go into your VBA screen then select the form, in the controls toolbox use the right mouse button and select to add controls, then scroll down the list until you come across the date picker, add a tick in the box to the left then click ok. On the control toolbox you will then have an extra icon, drag it into your form, size as necessary, test the form and you will get a date picker.