You are in the right forum. You already have the correct software - ProntoEditNG. This is the only software you can use.

You can use any PCFs for the 3000/3500/950/960. You can also use color PCFs for the 7000/7500/980/990. But the conversion from color to monochrome isn't all that good.

As I also said before you can also convert CCFs from the older Pronto range, but the only reason you would ever do that would be to get some IR codes.

What leads you to the conclusion that the ProntoEditNG you have installed from your CD will only take CCFs?