Hi Michael
Sorry I have taken a while to reply, the living have been demanding my attention :-)
The family search pilot site is sort of the new version of the IGI. I don't think I can give a direct url to the Bishops Transcripts for Durham and Northumberland, but if you go to
http://pilot.familysearch.org/recordsearch/start.html#startand then click on 'Search or Browse our Record Collections'
then click on Europe on the map
now scroll down to United Kingdom
and finally
England, Diocese of Durham Bishop' Transcripts 1700-1900
From there choose Northumberland and then Edlingham.
Phew! when you get your breath back, navigate to the pages I said and you will see the relevant scans of the parish register.
At the moment, you can only browse the images, they have not indexed them, so you can't search for a name and find it. I am transcribing Edlingham parish for Free Reg at the moment though, which is how I was able to give you the image numbers to be able to find these entries.
Good luck with it, if you get lost trying to follow my directions, let me know and I will have another go :-)
Boo