hi,
i don't think this is possible but you can easily create this yourself:
declare a public variable in the form you want to protect
Public bln_pwdok as boolean
then in the form_open procedure add:
DoCmd.OpenForm "form1", , , , , acDialog
Do While SysCmd(acSysCmdGetObjectState, acForm, "form1"

<> 0
DoEvents
Loop
If Not bln_pwdok Then
MsgBox "no access to this form"
DoCmd.CancelEvent
Exit Sub
End If
then you create a new form (in my case "form1"

with a textbox on it
Private Sub text1_afterupdate()
If Me!Text1 = "mypwd" Then
forms!myprotectedform.bln_pwdok = True
End If
DoCmd.Close acForm, "form1"
End Sub
watch out:
1. the "control box" property for form1 you want to disable
2. in the inputmask for text1 you choose password
this should do the trick.
CPU-burn