Mapping Field Account Salesforce - Magento

Hello to everyone,
i need help to mapping fields from Magento to Salesforce by standard connector. My issue is that the customers in Magento become and Account in Salesforce with Email in the Name field. Is there a workaround to put in the Name “first name+Last name” of Magento customers?
I can’t edit the Account on Salesforce after the syncro because if i’ll synchronize Orders, they are not related to this Account.
Thanks very much for the help.