We need dutch language pack

We use jpayplans for subscriptions like silver, gold and platinum.
Price is dependent on jpayplan subscription.

Example basic 40 euro, gold minus 5, silver minus 10, platinum minus 15

Would be great to use for jomsocial events. When a member clicks on buy ticket he goes to this software. He can buy ticket, his settings like name and adress are retrieved so he doesnt need to enter again and at THE end THE member is in THE list of attended members.