Setting each character to its own wow folder.

[OzPhoenix]

is it still effective?

Working well for me so far.

[MiRai]

ISBoxer doesn't run virtual 'folders' as far as I know. If you want to setup separate WoW folders for use with InnerSpace you have to right click on the tray icon and 'add game' for each folder you're using. After that is done you'll want to go into your characters in ISBoxer and select the new, correct, profile from the drop down menu.

Not exactly related but I'll add it...
If you want to use other monitors that aren't attached to your primary video card you have to go into each profile under IS's configuration and manually choose which screen these game instances will be launching on [Primary/Secondary/Tertiary/Quaternary].

EDIT: I'll leave my post but....Lax obviously answered it up higher. That's what I get for skipping to the bottom of old threads. =\