Need to buy with a good provider a 50 - 100 domain pack at a reasonable price, The only bad thing is I only have a Diners Club Internation (the reason is that is the strongest credit card in my country: Ecuador), Suggestions please!

I don't know of any registrars that accept Diner's Club, but if you can't find a registrar you can probably find a Web hosting service that accepts Diner's Club that can register the domain for you. Try a search on Google.