Don't mess with your server. You will (really, honestly) get the best user experience with it if you install Windows Home Server on your hardware, put it in a corner once you're sure it's stable, and ignore it until you need to add storage. If you do this with your server, it should "just work" for a very long time. The more tweaking and tuning you do, the more likely it is that you will introduce system instability.
And yes, Evaders99 is correct, in effect. Because Desktop Search is the search engine that supports the Remote Access search functionality, you need the Indexing Service.
I'm not on the WHS team, I just post a lot. :)