Help with Username ID

hi.
Im trying to make a button to login to A chat room from my CB site.

here is the code im using. How do i retrieve the username to put into the value place?

<input type=hidden name=user value="???????????????">


Here is the code im tring to use

<br></p></form>
<table border="0" width="100%" cellpadding="10" bgcolor="#EFEFEF" cellspacing="0">
<form method=post action=" XXXXXXXX.ivocalize.net/launch.asp ">
<input type=submit value="Enter Chatroom" class="submit" style="font-size:16px;float:right;width:140px;">
<h3 style="font-size:18px;margin-top:5px;"><strong>Join the Chat Now!</strong></h3>
<p class="nomargin">
Your Name: <strong>???????????-</strong>
<input type=hidden name=user value="???????????????">
<input type=hidden name=pass value="">
<input type=hidden name=room value='XXXXXXX'><br>
<em>HINT: to let everyone know where you are,
be sure to <a href="/login/profile.asp">test123</a> to include
your location!</em>
</p>
</td></tr></form></table>



<br>

Please understand the CBSubs support forums are for CBSubs related support, it's not a replacement for Advanced or Professional support where more general topics are accepted; thread moved.