I want to set up my Android app so that it can only be downloaded/installed on the Samsung Galaxy Tab. I've looked at guides like "Five Steps to Future Hardware Happiness," but I haven't gotten much out of them. The Galaxy-Tab-only requirement is from the client that I'm building this app for - specifically, he wants to target just the Galaxy Tab P-1000 model, not other Tabs.
How can I set up my app so that the Android Market knows it should only be available to this specific model of device?
You can do this on Google Play itself, by adding all devices except the one you wish to support to the "Manually Excluded" list of your store listing. More information is available here:
http://support.google.com/googleplay/android-developer/answer/1286017