Want to run DynDNS Updater on RN PRO - How?

When I leave on vacation, I take my laptop and only my NAS PRO is left running. NAS Remote hasn't seemed to work so I wanted to use the DynDNS.org Updater client. It will install on my PC's just fine but how do I get it to install on my PRO. I looked at some really old(2008) messages but I found them confusing plus I'm sure things have changed with the Updater client by now. I hope the answer is straightforward as network administration isn't really my thing. Thanks.