Assuming that the bound column of your listbox is a numeric value that
corresponds to an ID field in your table, you could write some code for a
command button. I strongly recommend you copy your data and work with the
backup until this is working the way you want it to.
Private Sub cmd_Delete_Selected_Click
Dim strSQL as string, varItem as variant
For each varItem in me.lst_ListName.itemsselected
strSQL = "DELETE * FROM tbl_yourTable " _
& "WHERE [ID] = " & me.lst_ListName.Column(0, varItem)
currentdb.execute strsql, dbFailOnError
Next
End Sub
HTH
Dale