Harry, That's why I added the "or augmented." I can't think of any reason why the functionality of FILELISTs couldn't be duplicated in a compatible way with SFS so that people who *are* running SP6 with SFS can use SFS, and people who aren't can use FILELISTs. I understand that there may be objections to having two versions of LISTSERV floating around that are so radically different under the hood, but as long as the interface remains someone consistent (it would actually be cleaned up significantly by using SFS) no one should care what's going on under the hood. Andy