MS Personal Web Server & cookies

Hi

I'm trying to get some client-side JavaScript to use cookies and I'm having trouble. I'm using code from irt.org

function Get_Cookie(name) {
var start = document.cookie.indexOf(name + '=');
var len = start + name.length + 1;
if ((!start) && (name != document.cookie.substring(0,name.length)))
return null;
if (start == -1)
return null;
var end = document.cookie.indexOf(';',len);
if (end == -1) end = document.cookie.length;
return unescape(document.cookie.substring(len,end));
}

function Set_Cookie(name,value,expires,path,domain,secure) {
document.cookie =
name + '=' + escape(value) +
( (expires) ? ';expires=' + expires.toGMTString() : '') +
( (path) ? ';path=' + path : '') +
( (domain) ? ';domain=' + domain : '') +
( (secure) ? ';secure' : '');
}

I'm guessing that it's probably something to do with the fact I'm using Personal Web Server, and domain names. I'm using a domain of 'newdpr.com', and the directory on my machine is wwwroot/newdpr. Is this something that I have to wait until I upload the site onto a full server? Newdpr is just a working name.

Thanks!

Peter