if I were you this is what I would do: make 10 timers with a interval of 60000

and set enabled to false (to every timer but timer 1)

Code:

Private Sub Timer1_Timer()
Timer2.Enabled = True
Timer1.Enabled = False
End Sub

Private Sub Timer10_Timer()
'your code here
Timer10.Enabled = False
End Sub

Private Sub Timer2_Timer()
Timer3.Enabled = True
Timer2.Enabled = False
End Sub

Private Sub Timer3_Timer()
Timer4.Enabled = True
Timer3.Enabled = False
End Sub

Private Sub Timer4_Timer()
Timer5.Enabled = True
Timer4.Enabled = False
End Sub

Private Sub Timer5_Timer()
Timer6.Enabled = True
Timer5.Enabled = False
End Sub

Private Sub Timer6_Timer()
Timer7.Enabled = True
Timer6.Enabled = False
End Sub

Private Sub Timer7_Timer()
Timer8.Enabled = True
Timer7.Enabled = False
End Sub

Private Sub Timer8_Timer()
Timer9.Enabled = True
Timer8.Enabled = False
End Sub

Private Sub Timer9_Timer()
Timer10.Enabled = True
Timer9.Enabled = False
End Sub