Nostalrius Begins - Quality wow vanilla realm (1.12)

I have no idea where my original disks are anymore plus i already have all the information that would be on it installed on my computer, and blizz must have integrated the realmlist file into their .exe. kind of at a loss of what to do here if anyone has dealt with this or has an idea of how i should proceed let me know i want my windfury crits

which file would I use