Thanks for answer my question, and I apologize for not answering before, I tried to enter your site today and I couldn't :( I have forgotten this credit card problem, the thing is I'm in Venezuela, a Latin American country with restrictive currency policies, so I can't buy US$ as I wish therefore my card can't be verified, also the number you gave me is tollfree but I don't know if it would work for me being in a foreign city.
I'm pretty sad :( I'd really wish my kids could access your incredible site. If there is something I can do please tell me.
Thanks again for your attention.