first:
you can configure your no-ip without caring about HFS.
there's no special configuration you need for HFS.
so, you can follow instructions provided by no-ip.
second:
you'll find no-ip has an "updater" that keeping sync-ing your IP with your no-ip.
HFS has an internal updater that many people uses to save some memory.
The no-ip updater is better, but it's another program on your computer, and some people like to keep lighter.
How to use it? Just set your no-ip account, and when you are done, click on HFS "no-ip wizard" and input the required info. Nothing else.