Workflow Sales Leads Problem

Workflow Sales Leads Problem

Greetings from Bulgaria.I need attention here on one question!
      
      I have a field in the Sales Lead that is named "Validation". I want when the sale lead is validate so this field become true to update all fields in Contacts, Accounts an to where is possible. I am reading that this is possible, because the other modules are parent modules to Sales Leads, but i can't find any solution.
      You can add some criteria, but i want from this criteria to update other modules, not only the Sales Lead module. Is this possible?

Thank you, Vladimir!