plugins - generators vs ... ?

I'm working on a plugin that outputs Javascript suitable for digestion by Plotr:

http://rubyforge.org/projects/chartr/

And I wanted to copy in the plotr.js file as well as a suitable version of prototype.

My questions are:

1) Is creating a generator the best way of doing this? All I need to do is copy a few files, not create something with a name, which generators seem to want.

2) This prototype business is tricky. Plotr *needs* 1.5.1, whereas Rails ships with 1.5.0. Any creative ideas on handling the conflict?

Thanks, Dave