multiple sites on apache (virtualhost)

I am trying to configure 2 and more sites on one apache server.

I've been working at it for a couple of hours now and no joy.

Can i access them in my browser in some way.

Do I need to configure a DNS server with the names pointing at the servers IP or what is wrong. Can you point me to some help to this.

If I only have to configure this in apache to get it to work when i type the website name on the local computer. Can you give me an example or head me towards a tutorial to do this. Or send me an email with a file containing the nessescary files/folders to do this ?

System:
Winxp
apache wamp packet.

Found what I needed. For those with a similar problem go to:
http://www.netahoy.org/tutorials/apache2.htm