@ arvicharlie: are you now working in illinois? do they really require a CGFNS exam pass? or just the CES for the conversion of tourist visa to immigrant visa?
You have to meet the state requirements and will also need VSC. BE AWARE you CAN NOT convert tourist visa to immigrant visa due to retrogression. If you are not already in the US with a valid work/immigrant visa then you need VSC so I suggest doing CES as same documents can be used for CES and VSC