In Photoshop CS, is it possible to automate the renaming of layers if for example you have a psd file with 150 layers all with default layer names (Layer 1, Layer 2, etc.?) I would like the layer names to be in the format 001, 002, 003, etc.

Is it also possible to change the default layer naming beforehand in preferences or something so it whenever adding a new layer it would be in the format you want?

Thanks.