Just built my htpc (got hd playback working finally ), now the thing is i really only want 1 hdd inside the htpc for tv recordings and i want either an external drive or nas. What i cant decide is which one... i dont really want the htpc to have internet access (viruses, resource hogging norton etc...) but it could be networked wirelessly to the nas if there was a way to block internet access from the router... but what i also need to know is will for instance streaming a dvd from the nas affect the picture quality and is the extra expense really worth it?