Deleting users

[PHREdd <phredd @ Mcs . Net>]

I have users with "(" in their usernames.  How do I delete them
(wildcards, as used in Listserv, don't work so well).  I'm also trying to
figure out how to delete someone when, due to the length of the e-mail
address, is too long (i.e. unsubscribe list joe@xyz.com).  -- that is two
lines:  unsubscribe list  and "joe@ihavealreallylongdomainname.com")

Ideas? :)

Blaine
phredd@mcs.net