Restructuring the old classification structure with a new structure thereby developing a utility

Hi All,

I need to develop a utility where I need to delete the old classification structure and load a new classification structure in the alphabetical order or restructuring of the old classification structure.

Say for suppose within the below sample structure

          Structure| Part | Electronic Parts | Capacitors | Capacitor, Aluminum

1.) The changes that has to be made in the first level is replacing the word Structure with Obj

          Obj| Part | Electronic Parts | Capacitors | Capacitor, Aluminum

2.) Within the second level there will not be any changes

3.) However in the third level we need to use a single digit alphabet character as shown below

    Obj| Part | Electronic Parts | Capacitors | Capacitor, Aluminum

to

          Obj| Part | C | Capacitors | Capacitor, Aluminum

So how would I develop it in the form or a utility ?

4.) And we need to use the same classification attributes that were used in the old structure to the corresponding new level definition.

So I need some inputs or some code snippets in case like how to develop that utility. Can anyone please let me know about it once.

Best Regards,

Aditya Achanta