Codes on Riivolution

[Cheetah]

I really need help getting codes on Riivolution.  I can't find any tutorials for brawl codes.  I know how to make GTC files of the codes, I just need to know what to name them, what folders to put them in, and how to eneble them on Riivolution.  I would appreciate any suggestions and links to tutorials and important file downloads.  Thanks!