I have a refurbished Samsung Galaxy Tab with no Android Market App
Have you tried installing the Market?  I've installed the 3.4.4 Market from Android Police a few times, if you're looking for a safe file.  Just put it on your SD card or internal storage (make sure it has the .apk extension) and install it via a file manager.  Settings -&gt; Applications -&gt; Unknown sources needs to be checked for this.