how to find the codepage in system

hi team

i have an activity of unicode migration.

my current system is 4.7 Non unicode IDES.

I hve to do a combined upgrade and unicode migration to do from 4.7 IDES to NW 2004 IDES.

I have read few notes and guides where it says the process varries with MDMP, Single code page and blended code page.

I went to se16->TCPDB-> no entries occur.

Can you plz suggest heer how to move ahead as all notes mention about single code page, blended code page and MDMP.

Regards

Pooja