hi mike -
read the beginner's faq (link at top of forum) - there's some good info about this. (heck, i think i'm the one who wrote it...not sure now...)
my personal bottom line: try it both ways.
if you don't see a difference, go through the receiver as it invariably makes it easier to switch *both* your audio and video with one button.
edit: here's the link to the faq
http://www.hometheaterforum.com/htfo...hreadid=120328
and the specific article (which i guess i did write)
http://www.hometheaterforum.com/htfo...s&userid=17221