Planning on buy but...

I'm really interested in this products though I don't have a paypal account or a working credit card for the internet.

I'm wondering if these credit cards you buy on gas stations is working on paypal?
Also does this hack work on 64-bit windows 7?

Yes the hack works on 64-bit windows, and you can pay via a prepaid gift card with PayPal.

There is more information as to how on PayPal's official site.