MUC

Hi, i'm very very new to jabber.

I have a test machine with ejabberd setup under microsoft windows, lets say the machine is called "mach1", i wanting to create several, conference rooms, i've tried adding one, conf.mach1, but i can't get it to work. Not even sure if i'm doing right so heres the code:

...
{mod_muc, [{access, muc},
{access_create, muc},
{access_admin, muc_admin},
{host, "conf.mach1"}]},
...

My client is Psi, i connect to the server and can talk to other people conencted but none of can join the group chat.

Thanks for any help :)