Apple TV gen 1 question


I've just purchased an Apple TV gen 1, will set it up with my current non-HDMI tv. In the future when I do upgrade to a HDMI tv, will I need to re-set the Apple TV with the new tv? Sorry if it's a dumb question to most out there. Thanks in advance.
soundmark1
Another question: while I have a wireless network, is it possible to sync music files from my Apple laptop to the Apple TV via ethernet cable after I've done the initial setup? Or does it have to be done wirelessly? All answers appreciated.