public facing page as subdomain

I'm trying to figure out how to get a public facing profile page to
run through a subdomain. The subdomain doesn't need to serve as a
login page to anything, it's just meant to be a public address with
profile info. I was having a hard time figuring out how
account_location would handle this (all the examples i've seen are for
routing to an individual's admin, and not meant for public-facing
pages.)

Any help would be very much appreciated...

-s