Damn, it's been a long time since I tried playing through BGII. And although I can't believe it, I'm stuck. This is concerning what to do with the Knights after completing the Planar Sphere quest. I know you can let them out into Athkatla, or tell them to seek out the Most Noble Order of the Radiant Heart, but I also distinctly remember there was a way to send them back to their original plane. I know you have to pay somebody a rather large sum of money, and he does it for you. It's also the only way to get the girdle you need to make the really nice Golden Girdle on the Item Upgrade Mod. The question of course, is who do I talk to?

Talk to Ribald in the Adventurer's Mart

:doh: That's right! I never would have thought of that though, until I eventually needed to stop by the Adventurer's Mart, but since I already purchased everything I intend to buy from him, it's likely that wouldn't have happened until sometime around Chapter 6.

Don't forget that you need to trigger the option by talking to the obnoxious mage, otherwise talking to Ribald won't do you any good.

It's towards the end of your initial conversation with him, where you challenge him to send them back. He tells you he can't/doesn't have the time, but that you should talk to Ribald.