Hi All.
Just a quick note to say that I didn't have to contact E-on in the end. I installed Infinity on my main PC first and went though the automatic registration. Rebooted and then went off and installed it on my Laptop eactly as I did on my main PC.

I was automatically issued my activation number for laptop too :-)

Just letting people know in case this comes up again at some point.

Regards.
James.