No that was a mistake Henry, sorry.
I made a huge render last night and I thought it crashed, but looking back at it it must have been auto-update as well. Ghehe, lol.
I'm on windows 7 now and in my XP64 time I got it working the way I described, but I don't know how anymore, sorry.
Can I have a look at your file and see how I go with the surfacing?
Cheers,
Martin