weltergon,
I am not sure what you are looking for in the SQL select statement but the following will take and add OR between all the value which have been selected in a multi select listbox.
As you can see this code was set up for the click of a button but you can associated with the event that will work best for you.
Private Sub Command2_Click()
Dim strItems As String
Dim varItm As Variant
Dim cntr As Integer
For Each varItm In List0.ItemsSelected
cntr = cntr + 1
If cntr < List0.ItemsSelected.Count Then
strItems = strItems & List0.Column(0, intCurrentRow) & " OR "
Else
strItems = strItems & List0.Column(0, intCurrentRow)
End If
Next varItm
MsgBox (strItems)
End Sub
HTH,
Steve