Steps and Procedure to install Dusk Evolution 2.5 Leo 2.02

[killahcheese]

Original Post can be found here
http://forum.xda-developers.com/showthread.php?t=544422
I want that theme on my TP2

I'm a bit confused on how to install this theme completely on my TP2.
What are the programs I need specifically and the ROMS I may need to flash?

My current ROM: 1.86.707.4 (67102) WWE
Rom date: 10/23/09
Radio version: 4.49.25.17
Nothing has been edited at all.

And also, how would I revert the changes that are needed if I want to go back to the original theme after?