1. A computer based system for training first and second trainees in relation to a work subject, the computer based system comprising: (a) first and second trainee client computers each having a respective display and a rendering module for rendering three dimensional models, the computer based system including a first trainee model distributed into said second trainee client computer corresponding to said first trainee, a second trainee model distributed into said first trainee client computer corresponding to said second trainee, and a work subject model distributed into said first and second trainee client computers corresponding to said work subject, the computer based system being configured to run plurality of animation routines for each of said first trainee model, said second trainee model, and said work subject model, the first trainee client computer having a user interface for enabling said first trainee to initiate communications controlling animation routines of said first trainee model, the second trainee client computer having a user interface for enabling said second trainee to initiate communications controlling animation routines of said second trainee model, wherein during a simulation run mode said rendering modules of said first and second trainee client computers render on said displays of said first and second trainee client computers at a certain time different perspective first and second first person views of a common scene, the first perspective first person view rendered on said display of said first trainee client computer including a rendering of said work subject model, the second perspective first person view rendered on said display of said second trainee client computer including a rendering of said work subject model; (b) wherein said computer based system is configured so that said computer based system is in communication with a personnel database retaining data respecting said first trainee, the computer based system being configured to utilize information extracted from said personnel database in determining a characteristic of said first trainee model, wherein said information extracted from said personnel database includes an image file representing said first trainee.