After the release of Kindle fire I have seen that a large number of users are still facing issues in usb drivers, for all those fried i am posting a solution here .. let me know if any help required

Kindle Fire Driver Problems & Solutions

Kindle Fire Driver Problems In Windows XP & Windows 7

[How To] - Enable USB Debugging in Kindle Fire

[FIX] - Amazon Kindle Fire & Nook Tablet USB Driver Problems