We were on a radar heading from the north after asking for visual appproach into NZWN, waiting to sight a 737 joining a long final from the south and going slow. The 73 is going very slowly as ATC keeps asking me can I see it yet to which I finally reply "ah......think so got some lights about 1 oclock but seems a long way off" to which the controller replies with tone in voice "yes thats him if I'd known he was going to join finals via the sub-antarctic I'd have made you no.1". Ouch.