1. A virtual simulator system for neuromuscular training and certification via a communication network, comprising: a database connectable to the communication network, the database storing data relative to one or more of (A) a code of conduct, (B) state-of-the-art, (C) physics law equations, (D) technical code and technique for physical activities requiring training and certification for a user, or (E) training scenarios complying with the code of conduct, state-of-the-art, physics law equations, technical code and technique; a multimedia device connectable to the communication network, the multimedia device having a stopwatch circuit and an input device for interaction with a user; and an on-line simulator processor connectable to the communication network, the online simulator processor capable of performing operations comprising: retrieving data representative of one of the training scenarios from the database in response to a user selection on the multimedia device; generating test elements, parameters and controls based on the retrieved data; monitoring online use of the input device by the user; performing calculations of a simulated environment on time and online in response to the use of the input device by the user and management of the test elements, parameters and controls by the user; generating real time images on the multimedia device replicating the simulated environment according to the management of the test elements by the user as a function of run-time data provided by the stopwatch circuit; recording the test elements in the database; and certifying with a third party witnessing from a certification bureau that the online use of the input device by the user meets minimum requirements to satisfy a welding code.