With my luck there's already a modified version out there, but, well... it was a good learning experience as much as anything else. Here's a version of the HME Simulator app that comes with the HME SDK that's been modified to simulate a Series 3 display environment... so it's 1280x720. I had to kludge a couple things... specifically some specific limits on sizes of transfers and resolution of images, not knowing what the new limits actually are on the Series 3. And I just noticed I need to recreate the Safe area graphic overlay. Since this was quick & dirty, it's not supporting anything but 1280x720 right now. I don't know if it'll do anything useful with an HME app that is SD only. I needing something for myself quickly. If there's interest, I might go back later on and clean the things up that I added so it can support all 3 resolutions that seem to exist. I packaged it all up as a single executable jar so you shouldn't have to deal with having to hunt down anything or worry about where to put this jar file. http://www.2150.com/tivo/files/simulator_hd.jar Any feedback or suggestions are appreciated. I'll keep the jar file up to date should I end up having to fix anything as I continue working on my HME stuff.