samba - Jan 2006 - ACLs

I am having a heck of a time getting ACLs to work in Samba. I can create
files in the shares fine. But when I go to change permissions, I get an
access denied. 

Nt acl support = yes
Security mask = 0777
Directory security mask = 0777
Admin users = myaccount

I don't know what else to open up. 
________________________________________
Chip Burke