Local group authorization

[Jeremy Lew]

I'm trying to do some role-base authorization in web.config with groups that
exist on the server machine but not in the domain which the server is a part
of. An unqualified group name in the <allow roles="..."> setting will be
assumed to be a domain group name. I can qualify the group name with the
local machine name, however this web application will be deployed on a
variety of machines, and I am looking for a generic way to specify the local
machine (akin to the "BUILTIN" qualifier you can use for the Administrators
group). Does such a keyword exist? I have tried
LOCALHOST,LOCALMACHINE,LOCALSYSTEM. My only other option would seem to be
to modify the web.config at install time and put the actual machine name in
there programmatically.

Thanks,
Jeremy