Ok, I think I pretty much have it, say I wanted to put this:
FS=W810_R4EK001_FS_AMERICA_2_RED49
MAIN=W810_R4EK001_MAIN_GENERIC_HN_RED49
I would have to get something like :
Custom=W810_CDA102555_107_R2A_Generic_AMERICA_2

So another question would be, how does mine CDA102494/58 differ from that one? I know it has something to do with what country, or part of the country it's in, right? But would it be ok to flash that Custom Pack on this phone even though it is AMERICA 2 but may not be from the same country or part of the country my original is from? I hope I'm making sense to whoever reads this, I just seemed to have gotten a bit twisted and turned upside down with all the posts I've been reading :)