How do I use RELS?

[Toupe454]

I'm want to put in some stage imports however, there are some stages that I wnat but they both go over the same stage innitionally. So I'm going to need to use .rels to get some stage on but they are just confusing to use. If you could show me a guide or a program that would be epic.

[dark sonic 19]

here you go http://www.smashboards.com/showthread.php?t=269742

[Toupe454]

Thank you