That post goes back some time ago. You need to install Wilro's file as explained and then download one of Demetris's images. Once you get wilro's boot image installed you should then be able to toothpick boot Demetris's images. You need to use an img.gz file, not tar. Make sure you pick the right image based on your box specs.
First time I have heard of Wilro's file. Google it but not even a mention. Please guide me..
Not to worry. I have found your post.