First you'd want to make sure you device is in 'debug mode' or 'usb debugging' - set through development settings in your phone's 'system settings'
then run adb devices
from your adt-bundle folder/platform-tools to see if it got your device.
Edit:
if it doesn't work try, from your 'drivers' tab-
Update Driver -> Browse for driver software on my computer -> Let me pick from a list of device drivers from my computer -> Have Disk -> Navigate to your usb_driver folder
Notice the extra step near the end, you don't submit the folder in the "Browse for driver software on my computer" tab