21 Mar 2009 at 19:55 - 10
1. A "40/40" set is a 20/20 wand and a 20/20 focus.
2. It gives 32% chance of half cast time, 4% chance of one-quarter cast time, and 36% chance of half recharge time. (The difference between cast and recharge is due to the 50% cap on faster recharge.)
3a. 20/20 wands can be crafted in Leviathan Pits or Vasburg Armory for 5k plus materials. If you don't have access to those cities, many people on Guru (including myself) are willing to take your gold and materials, go make the wand, and bring it back to you if you ask them nicely. You can also use a Droknar's Key to get a 20/20 wand in the EotN endgame area, though purchasing a D.Key will probably run more than 5k.
3b. 20/20 curses foci can be obtained from collectors for 5 feathered avicara scalps, 5 bleached carapaces, or 5 warden horns. You can also craft 20/20 foci in Leviathan Pits or Vasburg Armor, or obtain them with a Droknar's Key, but both of those options will definitely cost more than just farming some avicara/bugs/wardens.
4. Cry of Pain is not a curse skill, and will not benefit at all from a "40/40" set.