I have just got hold of some nice driftwood from a pet shop. It is meant to be for an aquarium, but I thought it was to nice to waste on fish!

Anyway, I haven't tried to do a driftwood style planting before and would like to know if anyone can give me some guidance.
One of the main problems I'm having at the moment is with preparing the driftwood. Some websites and books say to use a wood preservative on it and some say don't. I have also been told to give in a coat of sulphur/lime.
Any help would be greatly appreciated.
Thanks
Brad