I finally beat the warders with only two of my people dying. Now, I can't revive them. I have gone to every temple that I know of, and none of them can revive my dead. And, no the dead are not chunked, they are just greyed out on the side bar. I don't know if it makes a difference or not, but the two dead are Imoen and Khalid. I don't know, maybe I am not reviving them right or something. Somebody please help!!!

Reviving is very expensive, you might not have enough gold. It takes the level of the character you want to be revived and mutiplies it by 1000 and that's the amount of gold it will cost. When you go into the temple, talk to the priest with one of your characters that is still alive, obviously, then select a dead character in the window where you select the services the priest offers you, then if you have enough gold you can revive your character. Try that and see if it works. And yes, if Imoen is your only thief it is crucial that you revive her because Durlag's Tower is full of traps and locks that will need to be picked to go on with the game.