Long time no write. I never tried to get a video over 640x480 to play on the HD600, but now that we are trying, we don't seem to have any luck. I've converted my high res videos to 800x600, 1024x768, and other resolutions, all with acceptable data and refresh rates (well within the specs supplied by Roku). They just won't dispaly anything on any screen we hook up, and there are no error messages from the Roku debug output....all seems well. I tried the various "SetMode" values, and it doesn't seem to make a difference. The only change that seems to allow the .mpg's to play is to convert them to a 640x480 resolution. Any hints on this one would be really appreciated. As it stands, we'll be ordering the newere model in the near future, but we still have about 8 HD600's left and would like to play an mpg with a higher res than 640x480. Thanks in advance for any help you can offer on this subject.