Thanks prixat!

I've writen the author of HDR, and am hoping for a reply.

How did you perform step 3?  It says to use the Eliptical marque tool to make a perfectly circular selection, around the eliptical distortion of step 2.  So, did you select the height or the length of the distortion? I think it would be the height(Given the constraint) but then it says something about the top edge? 

I looked for an e-mail, to write this author also, but maxon computer looks like a pretty big company, and doubt their main e-mail(info_us@maxon.net) would be pertinant?