OK, I downloaded this file:
http://era.techfumaster.com/ERA_EI22_RC_2.zip
Now I place it on my SD Card Root directory, Boot my phone into Setup mode (volume down + Power Button + Camera Button) and select the ERA_EI22_RC_2.zip file and that's it?
In case I don't like it or something goes wrong, how do I flash back to stock Gingerbread?