In addition to the link provided above, there ARE a few differences from using Gecko itself. For example, instead of going into a "codes" folder, your .GCT file will have to be moved into the /pf folder.
Other than that, it's pretty much the same as Gecko, directory-wise. Also, you'll need to switch to a Common5.pac if you're not using one already 
Uhm can you explain that better
im noobish and dont speak very good english