[PHP Newbe] insert HTML with IF

[CoolMike]

Hi

I would like to use the chat which my hosting provider is offering with the VB username.

I found out I need to use the following link to use the chat:

http://domain.ch:2084/?nick={$bbuserinfo[username]}&channel=domain.ch

But now, I would like that the link is only displayed for registred user. What do I need to change on the following if I would like to insert it in to the style header?

PHP Code:

<?
if {$bbuserinfo[username]} <> "unregistred" {
echo "<TR><TD class=menu colSpan=2 onclick="window.location.href='http://domain.ch:2084/?nick={$bbuserinfo[username]}&channel=domain.ch'" onmouseout="this.style.background='#dedfdf'" onmouseover="this.style.background='#FFFFFF'" width="100%"><A class=menu href="http://domain.ch:2084/?nick={$bbuserinfo[username]}&channel=domain.ch">Chat</A></TD></TR> };
?>

I don't know PHP I was just using some examples, but it's not working...

Thanks for your help.

cu
Mike