2000 web server

Hi,

I recently registered my domain name and i want to set up my own webserver. Everything works fine is I use the IP address and if I type in the domain name without the www but if I include the www (www.mysite.com) then it wouldn’t work. Can anybody point me in the right direction as to what to do? I’ve set up my zone file to point to the static IP of my webserver. My zone file looks like this:
webserver.domain.com A 67.113.xxx.123
www.domain.com A 67.113.xxx.123

I’ve also tried setting the host header to be www.domain.com but that didn’t work either. I know this shouldn’t be that difficult but for some reason I can’t seem to figure it out. Please help!