Finding the right driver to enable build and run can be tricky, manufacturers (especially Samsung) often add features and change things with their drivers which prevent this fantastic feature from working.
Clockworkmod have released a Universal ADB driver which should support pretty much anything. If you've been having issues with getting build and run to work, this may be the answer:
Samsung Universal Android USB Driver for Windows:
You may need to remove existing drivers for this to work - do so at your own risk, Clickteam cannot take any responsibility for any problems the use or installation of this driver may cause.