Adding a prefix to filename in Bridge / CS3

I need to batch-add a prefix only to existing filenames in Bridge, e.g. 15447.dng to become AR_15447.dng etc. I can't see how to place the prefix correctly in front of the filename - does anyone know?

Thanks,
Alex Ramsay

use batch rename

Yes, of course. Problem is, it adds the prefix after the filename (i.e. 15447AR_.dng). I can't see how to put the prefix at the front.

you can set it up any way you want

put you text_ in the first box

then your number sequence in the second

Got it, thanks. Text in the first box, then 'preserved filename' and 'name + extension' in the boxes on line two. Cheers.