Hi mdax
Try this:
1 Highlight (click) the project name in package explore. (HelloWorld)
2 Click on the file menu (upper left).
3 Select export.
4 Follow the instructions.
Now you have a file (HelloWorld.apk).
5 Connect you device to the computer and transfer the file to the device.
6 Find and select the API Installer.
7 Follow the instructions and install HelloWorld.
Hope this helps

cliff