I would like to change my alignment to lawful good- I am currently neutral good, any ideas?
This is my second go at torment and I am just about to go to ravel's maze, I really want to try celestial fire, and I couldn't last time.

I don't know the exact programming requirements, but my experience is that selecting the "vow" dialogue options and fulfilling them tends to put one on the Law side. You also have to avoid being too mischevious or dishonest in your dealings. I know I changed from LG to NG after yanking Morte's chain during some dialogues in the Clerk's Ward.

Aloha
Vormaerin

Rules to become lawful good:

1. Never break any promise
2. Never lie
3. Never mock anyone - not even party members
4. No humor allowed!
5. Don't ask for rewards, only the ones you automatically collect won't affect you
6. Don't talk to undead unless you have the skill Stories-Bones-Tell (except the anarchist undercover in Mortuary and undeads in UnderSigil)

In your case, you're too far in the game already and you simply won't be able to regain lawful status at this stage. Sorry.

I don't know about that, Extremist. Normally I would never question your expertise :p but I ended up Lawful Good and I always tried to pick the humourous dialogue options. The only times I skipped them was when the humour was mean-spirited.

Picked humor that ain't sound mean? There's no such humor. Unless it is childish. :p :p

I don't remember ever changing my alignment after Ravel's maze but when I was neutral good and talked to Dak'kon about becoming a slave, I changed to lawful good (I think that vowing to set him free only makes him more depressed so it's probably no that option).
Try it if you haven't already spoken to him, it might work...

...or it might not.