Download kindle jailbreak 1.6 from:
Copy the data.tar.gz to the root of the kindle, (so if it's drive G on your computer you should have g:\data.tar.gz)
I have double checked the file is there (your computer may not dispay the .gz or even the .tar.gz but the file is directly visible in the zip file)
Eject the kindle from the computer
On the kindle:
restart the kindle
Once it's finished and rebooted you should have a new document which is called:
You are Jailbroken
Next copy the install.bin into the root of your kindle and update kindle.
That should be you all sorted.
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