2000Charge are great
The main question is "how do you want to use them"
You can:
1) Use them for everything, and not be registered with Visa USA
2) Use them only for EuroDebit and Korean transactions, and leave Visa and MasterCard to your US entities
It is a simple as that
Wolf is the name of the main man over there, and he will help you in any way you need
And if you need further proof that I know what I am talking about, have a look at my two sites:
http://www.HardProfits.com/
http://www.MultiBill.com/
And contact me if you really get into any difficulties (see sig)
Daniel