Anyone help me? I have neither the software nor the skills

I'd like this head: http://www.discopanda.com/gallery2/d/10158-1/IMG_2212.JPG

Put on the head on the right of this photo: http://www.discopanda.com/gallery2/d/10154-1/Archbishop_Collins_Pope.jpg

In a "as convincing as possible" way.

Anyone talented enough and can spare me some time? It will be printed in A4 so needs the high res. I'm at philip(DOT)ohare(AT)gmail(DOT)com if anyone can help.

Thanks in advance