I just got the time to do this; awesome and easy.
Thanks for the heads up, this is very useful.
Also, here's a link to the update.zip, so you don't have to search for it:
xda-developers - View Single Post - [SOLVED]Wakup via Optical Trackpad Download that, and put it on the root of your SD card. You can rename it to find it easier.
Here's a step-by-step guide for anyone a little nervous. All you have to do is:
1. Boot into recovery (you may want to do a nandroid backup here as well).
2. Select 'install zip from sdcard'
3. Select 'choose zip from sdcard'
4. Select the file you downloaded.
5. After it's installed, hit the power button and select reboot.
There you go, you'll be able to use the trackpad to wake the phone up, instead of the power button. I find it useful, since my case makes it somewhat difficult to press the power button.