Make data save in 1 row down from prev

hi i wondered if anybody could help with a code that saves data in the next row to the previous save data,

for example the user will fill in my form and then hit save which save the data in persific cells in row 19, and the they wish to save new data in the next row down. ive tryed all sorts of codes but non seem to be working so would anybody be able to help?

Here is the VBA Code i have for the form atm:

Code:

Private Sub cmdAdd_Click()

' Save form Contents Before Closing

Cells(19, 4).Value = txtDate.Text

Cells(19, 6).Value = txtPaid.Text

Cells(19, 12).Value = txtStaff.Text

Unload Me ' Close the form

End Sub



Private Sub cmdCancel_Click()

Unload Me ' Close the Form

End Sub



Private Sub txtDate_Enter()

txtDate.Text = Cells(19, 4).Value

End Sub



Private Sub txtPaid_Enter()

txtPaid.Text = Cells(19, 6).Value

End Sub



Private Sub txtStaff_Enter()

txtStaff.Text = Cells(19, 12).Value

End Sub



Private Sub Userform_Activate()

' Read initial values from Row 1:

txtDate.Text = Cells(19, 4).Value

txtStaff.Text = Cells(19, 12).Value

txtPaid.Text = Cells(19, 6).Value

End Sub

Any help would be great.

thanks
Chris