Yes indeed, that site is sometimes difficult to join.
Perhaps you can send a mail to the webmaster.
charm@postman.ru
He is very helpfull.
Or you can try to contact Haseeb, also a very nice guy: http://chiefacoins.com (see contact)
And as last I would send you to Numista: http://en.numista.com/forum/forum12.html.
Ther is Sujit_kumar the expert