> Hi I'm trying to make a script that first figures out if a 
> cookie is set, if
> not,do this, if so, do that.
> 
> Can I use:
> 
> Isset($HTTP_COOKIE_VARS['nick'] or what should I use?

Yes. If you have PHP 4.1.0 or higher, you can also use the recommended
$_COOKIES['nick'].

Kirk

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