Changing / Converting Demon Armor?

[Chester]

I believe that there are rules somewhere for converting Demon Armor into something "holy." (3.5)

I can't for the life of me find the rules.

Can someone point me towards the source?

[SiuiS]

Book of exalted deeds, I believe, has rules about converting unholy gear to the side of good.

[herrhauptmann]

Yup, book of exalted deeds.
Redeeming magic items.