A: Sometimes you can buy a static address from your ISP. If you are not interested or unable to get this option, you can try using a service that links a domain name to your IP address.
There are several free services. I used
CJB for a long time, and it was free and very handy, because you can update the link just bookmarking a webpage. If you know other free service you would like to see listed here, just leave me a line.
Once you get your fixed address, if HFS does not let you select it from the list, just do Menu -> IP address -> Custom.