insert a numbar at te begining of the file name

Hi!

I really need help with this one, I have a lot of files named por example:
ABC-0000
DFG-000
QWE-000
RTY-000
so I need to put a especific number dependending on the letter on every filename for example I have these filenames : ABC-1111,DFG-1111,QWE-1111,ABC-2222 DFG-2222, QWE-2222 so on, so on.

and I neeed that all the "ABC" files have a "1." on the file name, all the "DFG" have a "2. "

Anybody have an idea?

Reply to #1:
<<I neeed that all the "ABC" files have a "1." on the file name, all the "DFG" have a "2.>>

Replace method

Replace: ABC
With: 1-ABC

and

Replace: DFG
With: 2-DFG