QUOTE(guilmant @ May 6 2009, 03:56 PM)

I always use the usual vocal score. There is an arrangement, I think by Francis jackson that someone sent me to play from, but I didn't enjoy it, perhaps not familiar with the layout.
If I remember aright (and I'm sure I do) the Francis Jackson arrangement is the one with a sustained pedal bottom D throughout the introduction that completely saps the music of its energy and excitement. Avoid! (Apologies to the good doctor, whose taste is normally impeccable.)
I use the Stainer & Bell vocal score. If you want to wow your audience there is really no option but to pedal at least some of those quavers. Given a large organ and playing aids, my plan tends to be as follows:
First A on the pedals, then manuals only (softish Gt + Full Swell closed). Crescendo to the forte, maybe adding as you go, depeding on what you selected in the first place. At the forte, increase Gt to 15th and reinforce the first D in the LH with the pedals (make it a long quaver or even a crotchet) - same in the next bar. Then pedal the descending four-note scales. At the ff, increase Gt to Mixture and keep pedalling.
When the choir come in, reduce Gt to 8' Diap no.2 (Sw still coupled; maybe reduce that to Mixtures if you want); keep pedalling.
At the piano before "The church with psalms" I move to Ch + Sw, manuals only. Gt for the two forte bars and back to Ch again.
Where the basses enter forte, Gt 8' + Full Swell shut and start pedalling again. Open the box where the crescendo is marked and then close it again, reducing Gt to 8' flute. Move to Ch for the pp and engineer a cresc and return to Gt in time for the fortissimo. At the final fortissimo, pedal the top D, not the lower one, so that the pedal part plummets through that last phrase.
But obviously it all depends on the organ. For example, it might not always be advisable to use the Sw reeds as liberally as suggested above. Depends on how big the choir is too!