There's a long thread on a DS conversion
1) Convert Dragonborn to Muls, for now, I think?? (minus breath weapons)
2) SImilarly, I think tieflings would make great Athasian elves
3) No warlocks or monks (monks are going ot be in PHBII??) as they'd break the setting as PCs.
Ok for VERY rare NPCs.
4) For psioncis, I'd run themn as wizards, or multiclass wizards (WIld Talents!) picking spells/abilities most to do withcharm, telekinesis, Fear tc, *NOT* evocation type damage.
5) Defilers, from what another person wrote, and my take on it: allow Defilers to re-use an encounter
and a Daily power as their special ability, but cause "defiling" (kill plant life) every time they use and power.
defilers can't cast spells/abilities at ALL if they don't have plant life aorund them, including rituals. I'd limit # of spells/abilities usable in an area based on it's vegetation.
#10 for Barren
#20 for Poor
#30 for Farmland
#40 for Lush/Jungle.
Or some such.
