virtual man

Hi I know that this is not a pure programmation but from few days i've found this program . It is good for setup creation but what i want is : what is the that i should write to have a variable serial number related to a fixed constant ; Exemple : user name is : Pascal Serial : PAS27-215-2986 with 27 is obteined with a fixed opertion and the other 2 numbers also I don't know if you understand me or not ... Rq : Open code.iss with notepad perhaps that helps you to understand.. Thanks a lot ... B) code.iss