Shoutbox

I don't think it'd be possible to company-wide change the setting for everyone. I think you'd have to go round and change the setting on each machine. Send out an email telling people to turn the setting off or something.

It may be possible to write a script which created the reg key when the user signed in however. Though then again, it'd have to be installed on each machine(well, each messenger account that signed into the client on that machine would need it installed) aswell.

I don't think there's any easy way around it.