Yes please explain. I'm sure we're all curious how this was possible.
I won't try to answer on behalf of Kevin, but if you're looking to reg an .et domain you need to do two things:
1. Get your brain checked
2. Go to ethiotelecom.et, and navigate their site from there.
There is a 'hidden' page on the site, which is located here:
http://www.ethiotelecom.et/downloads/domainnameregistration-form.pdf
I guess if you managed to find an email address for them (good luck with that!) then emailing that completed form back to them will be your best, 'unofficial', way of trying to snag an .et name.
As Kevin has, rightly, said... .et names are not now publicly registrable, but why on earth would you want one anyway?!
Ethiopia is a severely poverty stricken African country, and they don't have laws relating to much, let alone IP! Your .et name then, can, and probably will, be snatched from you at any given time and no explanation will be given and you will not be compensated.
Case in point, the domain ri.ng was stolen from me by the Nigerian domain authorities back in April. They said I could keep the domain if I paid them around a hundred times what I had already paid (reg fee).
This worked out at around US$9000 for the name, and I believe you will find that many countries in Africa have 'retroactive' pricing, after registration, or indeed you will encounter what they charmingly refer to as 'super special prices for foreigners', lol.
Kev's "n.et" hack
should be worth a million... easily. But because it's Ethiopia, I say you can reduce the price by a thousand times or more; I wish him all the very best with his Flippa sale.
Cheers