System auto setting?

Hi all, I have a form which can let user select certain date for auto update. I am wondering how can I make the system auto insert the query to database when the date is here?

for example: If the user selected first day of every month to withdraw $100 from the bank_account table. How to set it run automatically? My code as follows, it works after I click on the submit setting button. But how can I make sure it will run automatically without visiting the form?
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....

If cmbAMonth.Text = "Monthly" Then

response = MsgBox("Deposit " & txtAutoAmount.Text & " To " & cmbFromBank.Text & " on " & cmbADay.Text & " " & cmbAMonth.Text & " For " & txtAutoCName.Text & ".")

Dim autoUpdate As String
Dim rs2 As New ADODB.Recordset
Dim getBankN() As String
Dim bankName As String

bankName = cmbFromBank.Text
getBankN = Split(bankName, "- ")

Dim autodate As String
Dim monthM As Integer
Dim yearY As Integer

monthM = month(Date)
yearY = Year(Date)

autodate = monthM & "/" & cmbADay.Text & "/" & yearY

MsgBox autodate

If autodate = Date Then

autoUpdate = "INSERT INTO REPORT VALUES( #" & ctm & "#, '" & getBankN(0) & "', '" & getBankN(1) & "', '" & txtAutoAmount.Text & "', 'Deposit','" & txtAutoCName.Text & "', 'Auto Setting')"
Set rs2 = cn.Execute(autoUpdate)

MsgBox "Done"

Else
MsgBox "Not inserted!"
End If

End If

.....

I'm not sure how you would do such a thing in Office. I know you can schedule batch jobs in DOS, and, of course, in SQL Server, there are DTS Packages, but short of something like the Linux Chron utility... I have no idea. That would have to be written into the package as a windows service or something.