How to change text in?

I'm using the Zencart 1.3.9h. I'm looking for change the text in payment method Step 3/3, where indicated the typa of payment that the customer must to do.

Anyone know where is this text?
Thanks

Best way to do this is cut and paste a portion of the text into:
tools > developers tool kit > look-up in all files
and it will locate the correct file you need to alter.

Thanks btman. I'm working in spanish version of Zencart, and the name of this tool I didn't find it. In spanish this option is called "Buscador de Archivos", and not like comment in all the sites of support. When you open this link, you can see "Herramientas para desarrolladores" equal to Developers toolkit.

Now I found it and could solved the problem.
Thank You Very much.