"Walk-through" is not a term I recognize. Are you referring to the nursing licensure compact? Here is the website:
http://www.ncsbn.org/nlc/index.asp (BTW, it
doesn't say that SC is a compact state ...)
If you're just referring to reciprocity, the ability to "automatically" get a license in another state because you have a license in your state, that applies to all 50 states. You just have to apply, pay whatever outrageous fee the "new" state BON has decided to charge, and have a clean disciplinary record and background check (the amount of time it takes to get the new license varies greatly, though).