PCD Virtual Connectathon Testing 2010
Using Dynamic DNS to map your home (or work) Dynamic IP address to a DNS name.
There are several providers who do this, I have used DynDns.com for several years with good results. Your home router may support this or other vendors, check your router configuration/help files for this information. You can also run an update client on a machine on your home network. All the services needed to do this should be free, you should not need to purchase premium services.