From my research, the REST API does not support lead conversion.  I am using the Group Edition for SalesForce, so I don't have access to the "Enterpise API (WSDL)).  Am I correct that the API does not support conversion?  If I were to write my own, does the conversion simply do:

1. Create Contact
2. Create Account
3. Set Lead status to converted

Is there anything else it does behind the scenes?