hmmm i have installed a shoutbox but in a phpnuke site 
see it at 
www.pc-gaming.tk
abt the copa fax no. leave it alone dont worry abt it 
well abt he users getting  the mails the host u hosting at should be allowing email forwarding 
to see that it does 
in the admin panel 
go to configration 
in the email settings(last) 
type your email address a normal adress 
which could be a yahoo or a gmail (iam using yahoo)
and save it
next time a person regiters at ur site a confirmation mail would be sent to him via this address u put there 
so no need to fiddle around with those smtp etc settings 
NOTE: in order for this to work 
u need to see that 
in the configration panel 
u put the right 
domain name 
maybe 
www.888.com 
and in the script path field maybe 
/forum 
see that these are right other wise the user will not get the right link 
e.g when a person registers at ur site 
he will get a mail 
in which there would be a link 
which will go this way 
as per say the above confi i gave in the example the link would be 
*www.888.com/forum/profile.php?mode=activate&u=3&act_key=******
if the link is right then ur user gets registered 
hope this helps you