Import contact associated to many accounts

Hi community,

we need to import contacts and these contacts can be associated to many accounts. We know the "Account Related Information" section and the relationship between the Contacts and Accounts is a M:M relationship.

For example, we need to import Contact: "Antonio Pérez". This contact will be to associate to "Account 1" with role "Manager" and "Account 2" with role "Director".

We have found a solution where we use webservices. But we are interested to find a solution with DataLoader, anybody know if is this possible?

Kind regards,
Luis