Hi,
When i try to create a room in Multi User Chat, server responds 'This room is locked from entry until configuration is confirmed'. How can i overcome this

Configure the room. Examples are here:
http://xmpp.org/extensions/xep-0045.html#roomconfig

i have got some problems:

I maded MUC like in the book,but
1) when user tester@v000001 logins at testing@conference.v000001/TESTER twice, there is no any rename or error handle to warn about it.
TESTER - is a nickname of user tester@v000001 right?
Im going to rename, like TESTER2...TESTER{N}
Why ejabberd not returning code 210?

2) iv got online translation (not on jabber), and while translation exist there must be a chat room. Im going to do this via php on server side.
initiate creating room (like 'translation#1')
giving some configs to room
and there must a condition, if user is guest,he can just browse chat, if regisstered, than can post.
So:
2.1) is creation steps right?
2.2) can i make just browsing messages?

Without some wire traffic, I can't really say. This would be the first I've heard of such a bug though.

Are you sending presence to the room from the same JID both times? If so, the room is going to treat that as a presence update, not a room join (the first one is a join, the second one is an update). If two different JIDs were to send that presence, one of them would get a nick conflict.

I'm not sure if ejabberd will allow you to control voice by affiliate out of the box. It's not something I've ever needed to use. One way to get around this if ejabberd lacks such functionality is to do what IRC channels have long done, and that's create a virtual participant that promotes and demotes people based on various properties.