[WanderingMinstrel]

First off, your cab works perfectly on my Sprint TP with stock rom. The program likewise.
This freebie version is extremely professional and impressive. It has as many bells and whistles (almost) as the Masters version, which I don't think you could run on a PPC anyway.
Simplest way to use the app is just to record stuff and save it. Bring up a new file and push record. That's 70% of what I do with it. I just like having all those other options if I need them. When you've got more time than you know what to do with, you can experiment with reverb and other fancy effects.
It's also great for making ringtones. Just copy an mp3 or wav file to a new file and select the part you want for your ring. Cut or copy and paste it to another new file and rename it (convert to mp3 if you want). It's easy. It's fun.

I'm not a real expert but if you have any questions, let me know and I'll try to help. My only negatives regarding NCH are about lack of support and their policy of pricing all their accessories and add-ons individually and extra. But the software itself is really amazing.