Make groups of keys in GnuPG?

[Filip Stokkeland]

Hi!
I have just installed GnuPG and mailcrypt (in Gnus), and it seems to
be working perfectly. I have one question, though:

Earlier on I used PGP in Windows (version 5.5 and later 6). There I
created groups of PGP-keys, so that I could encrypt to an alias
containing lots of people/keys.

That was very handy when I was sending messages to encrypted mailing
lists.

How can I do this in GnuPG? Do I have to make a script that runs
gpg -e <user1> -e <user2> ...

Or is there another way.
Or maybe I should put something in my .gnus?

Yours,
-- 
Filip