Here is the code. Found it on the web some time back. I have lost the actual writer of this.
on your Autoexec. open your form.
on your form. open Call Set Window. ****MAKE SURE THAT ON YOUR FORM YOU HAVE THE POP UP AND MODEL ON**** if not you will hide the entire db and have to go to taskmanger to kill it.
Also, make sure your error trapping is perfect!!!!
'_________________________CODE START_________________
Global Const SW_HIDE = 0
Global Const SW_SHOWNORMAL = 1
Global Const SW_SHOWMINIMIZED = 2
Global Const SW_SHOWMAXIMIZED = 3
Private Declare Function apiShowWindow Lib "user32" _
Alias "ShowWindow" (ByVal hwnd As Long, _
ByVal nCmdShow As Long) As Long
Private Declare Sub sapiSleep Lib "kernel32" _
Alias "Sleep" _
(ByVal dwMilliseconds As Long)
'
'
Function fSetAccessWindow(nCmdShow As Long)
'Usage Examples
'Maximize window:
' ?fSetAccessWindow(SW_SHOWMAXIMIZED)
'Minimize window:
' ?fSetAccessWindow(SW_SHOWMINIMIZED)
'Hide window:
' ?fSetAccessWindow(SW_HIDE)
'Normal window:
' ?fSetAccessWindow(SW_SHOWNORMAL)
'
Dim loX As Long
Dim loForm As Form
On Error Resume Next
Set loForm = Screen.ActiveForm
If Err <> 0 Then 'no Activeform
If nCmdShow = SW_HIDE Then
MsgBox "Cannot hide Access unless " _
& "a form is on screen"
Else
loX = apiShowWindow(hWndAccessApp, nCmdShow)
Err.Clear
End If
Else
If nCmdShow = SW_SHOWMINIMIZED And loForm.Modal = True Then
MsgBox "Cannot minimize Access with " _
& (loForm.Caption + " "

_
& "form on screen"
ElseIf nCmdShow = SW_HIDE And loForm.PopUp <> True Then
MsgBox "Cannot hide Access with " _
& (loForm.Caption + " "

_
& "form on screen"
Else
loX = apiShowWindow(hWndAccessApp, nCmdShow)
End If
End If
fSetAccessWindow = (loX <> 0)
End Function
Sub SETWINDOW()
DoCmd.OpenForm "FRM_KMV_RAW"
DoCmd.SelectObject acForm, "FRM_KMV_RAW"
fSetAccessWindow (SW_HIDE)
End Sub