How to update a theme to 2.1?

[musenu]

Hey all, I've uploaded a couple of themes that I worked hard on, and would like to make them more complete, both for 1.4.5 and 2.1. I used Prethemer to build them, and got a copy of all the pngs a long time ago.

Is there a way I can a) get a copy of all the files I would need to change for both OS versions, and b) a way to easily get them turned into an ipk?

I am not the most sophisticated coder, and I work in a Windows XP environment, but I'm very skilled in Adobe CS Suite. Thanks!