A form's RecordsetClone property is used to refer to its underlying recordset. You can manipulate this recordset independently of what's currently being displayed on the form. Here's an example:
Private Sub cboCompany_AfterUpdate() Me.RecordsetClone.FindFirst "[ClientID] = " & cboCompany.Value If Me.RecordsetClone.NoMatch Then MsgBox "Client Not Found" Else Me.Bookmark = Me.RecordsetClone.Bookmark End If End Sub