Gabriel,
You can use the form's On Open event (or whichever even suits your needs) to
run a line of code like:
Me.ActivexCtl0 = Date()
(where I have assumed the control's name to be ActivexCtl0 - change to the
actual one) to set it to the current date when the form opens. This will
work nicely on an unbound control.
If, however, the cotrol is bound to a table field, then you need to only set
it to the current date (or whichever calculated date) only when going to a
new record. In that case, you should use the form's On Current event, with
code like:
If Me.NewRecord Then
Me.ActivexCtl0 = Date()
End If
Note: the DTPicker control has a time part as well; if you also need to
record the time in the day, use function Now() instead of Date().
HTH,
Nikos