Alright folks, I've done a little math and come to a conclusion about dechlorinating driftwood: Water changes are the key. Even if you use a measured amount for cleaning up your driftwood and don't do subsequent water changes to lower the amount of chlorine within the driftwood, you're wasting your money. A little bleach (even at 5.7% available chlorine) boosts the concentration of Cl through the roof; it could take more than (5) 16 oz. bottles of AmQuel to counter the Cl present (AmQuel handles around 2.1 ppm Cl). Two excellent methods I recommend for cleaning up the driftwood to get the Cl out: 1) Direct sunlight, 2) Water changes followed by dechlorinator.
Direct sunlight will cause the bleach to leave the wood. I'm not sure on the chemistry behind this reaction but it will help. NOTE: THIS IS NOT ENOUGH TO COMPLETELY ELIMINATE CHLORINE IN THE WOOD. IT WILL REDUCE IT!
Water changes will draw the chlorine out. Varying concentrations of Cl within the wood compared to the water surrounding it will cause the Cl to leech back out of the wood (It will go faster at first and slow as the concentrations within the wood decrease compared to the surrounding water). I would recommend doing at least 5 of these water changes over a weeks time with large amounts of water compared to the size of the wood (My driftwood is about the size of a 20" computer monitor, I'm using 10 gal. of water per change). Once these water changes have been done, move on to dechlorinator. Don't be stingy with the stuff. You will have lowered the concentration considerably from the cleansing but you don't want to kill your fish. I plan on doing around 5X - 6X the recommended dose for 10 gal. of tap water at least twice. Don't forget some stuff may be temperature dependent. The warmer the water you put it in, the better off you'll be.
This is my method for cleaning this up. If you feel uncertain about anything, know a better way to get this done, or see any error in my suggestions, post it and let me know!