Anyways so if I were to install "Vector Linux SOHO 5.1.1" on lets say less thans 100 computers in our office I would'nt be burned by the makers of this product. I mean I might get sued for installing that many using only one copy?
To begin with you should have a "test" system that you try it out on first to make sure things will work as you expect and that the hardware will be usable as expected. Also, you can determine any extra steps that will be needed for the rest of the systems. Since you're looking at a company-wide changeover you should definitely spend some time testing it out on a single system first.
Regarding the legalities of installing VL SOHO 5.1.1 on 90+ computers, you _should_ be fine but
DO NOT TAKE MY WORD FOR IT. Please send a PM to one of the devs for a concrete answer (try vector, JohnB316, or Joe1962).