A site in which you insert bitcoin and the website then sends you neteller dollers which are spendable using the virtual cards. You can't do this directly from the site and a simple service like this could be very popular. At the moment people send neteller USD to something like pokerstars and then gamble a little and withdraw to neteller account in order to make credit card purchases, its inefficient and can be improved with a dedicated service.
Are you looking for website to do the above quoted or you want to create a website that can do it? I don't understand.