When I finished SoA I was as I created myself, neutral. Now, in ToB I am neutral evil. I picked up Sarevok in the pocket plane, did this cause the alignment change?

no, the change would happened in hell when you got the tear's of bhaal..

There are two routes to each tear, a good one and an evil one, if you do the evil your alignment changes, if you do the good one it stay's the same.

Well,, that's kinda bogus. I feel certain that my choices weren't overtly evil. I sacrificed MY stats when I could have burned Viconia. I didn't accept the nymph skin cloak. The other 3 choices didn't seem to make a difference. Would someone give a choice walkthru, please? I'm not going back, because of role-playing considerations, just want to know.

FEAR TEAR (the Nymph cloak) Good: Immunity to +1 weapons or less Evil: +2 CON

SELFISHNESS TEAR (sacrifice for companion) Good: +10 resistance to magic Evil: +2 to your AC

GREED TEAR (the Blackrazor sword) Good: +2 to all saving throws Evil: +15 to HP

PRIDE TEAR (the dragon) Good: +20% resistances to fire, cold and electricity Evil: Gain 200,000 experience

WRATH TEAR (Sarevok) Good: +1 to WIS and CHA Evil: +2 to STR

The one you probably failed on was either the WRATH TEAR (shouting at Sarevok and killing him) or the PRIDE TEAR (killing the dragon).

Ahh well.

True, the test of Pride is the easiest to "fail," especially for a Cavalier.
Cavalier- "My character is one specialized to kill Dragons! There is a Dragon in this cave! Oh, but not all Dragons are Evil....I know! I'll toss up a Detect Evil and see what happens!"
Cavalier- Detect Evil
Dragon- Evil
Cavalier- "Ah-HA! *HAVE AT THEE!!*"

LOL, the good rewards kinda suck. How many times have you EVER been hit with a regular weapon, +2 to strenght is WAY better then +1 to charisma and wisdom, except for maybe cleric.

Actually, you get +3 to Strength if you are a Warrior class ;)

Great fun :D

say you are an evil character.
if you take the evil path, does your alignment change to good???

It should, as I would assume variables would be set to the answers, the variables would then correspond to the alignment.

No, I would guess that it wouldn't... Like Degrader said, I imagine variables are assigned... And then a tally is done to determine where the character's alignment goes. As choosing the evil path is in accordance with evil alignment, I wouldn't expect a change. It wouldn't make sense to just have the character's alignment go in reverse just for choosing the evil path... But rather shift towards evil or, if there, do nothing.