[John123]

You probably just need to select the correct A/V input on the VCR, which will correspond to whichever SCART socket you plugged the Freeview box into.

You should have Channel +/- buttons on the front of the VCR. If you keep pressing the minus button, theoretically it should then cycle down through the available A/V input(s).

Better still, if you have the VCR's original remote you can select from there.

*EDIT* Just saw your post! I believe the attenuator should go on the 'Aerial In' of the Freeview box. You shouldn't need to run a coax from the Freeview box to the VCR, as there are no analogue channels for the VCR to receive.