We going to need a different folder/installation for green?

[DMN]

Or will we be able to use the exact same setup for green and blue?

[Worry]

Guessing it'll have to be a different one.

[soronil]

Or will we be able to use the exact same setup for green and blue?

Chars will have different ini files but you use the same set up. The server tells your client which server/patch you are on and your client can handle it. Most of the stuff is purely server side though.

[loramin]

Rogean says you'll only need one folder: http://wiki.project1999.com/Green has the quote but I'm too lazy to paste it here.