[p0s3id0n]

for the first one, i just anwsered :

@ DOTS : look at the chatbox template, you just need to
change the width parameter of the iframe tag.

and to have the chatbox reduced by default, the simplest way
would be to execute the following query :

ALTER TABLE user CHANGE chatbox chatbox TINYINT( 4 ) DEFAULT '0' NOT NULL

and maybe if you want to switch all your members to a reduced
chatbox execute also the folowing query :

UPDATE user SET chatbox = 0

~~edit~~
you're welcolme