I have the samsung galaxy tab, when I plug it into to eclipse to run and debug my apps. Eclipse doesn\'t recognize the device. When I try it with my friend\'s Droid 2 it sti
This is a fairly common problem. You basically don't have the drivers you need for USB debugging.
There are a few different ways I've had to obtain drivers for phones. The first way you should attempt is to go into the Android SDK and AVD manager and download the Google USB driver debug package.
This may or may not give you the driver you need. If it doesn't you will have to do one of two things. One, add the device details to the driver file you just downloaded. Generally these will be posted on forums/boards discussing your phone type. Secondly, you can download a different driver from another source like the phone manufacturer.