Ah ok, the opening post seemed to appear like the db's were included so the only thing really needed was to decrypt the txt files!
Mir3Res.dat is an encrypted file that eiServer loads, it holds things like Merchant.txt, Quest Info etc. But eiServer also looks for another couple of .db files that we don't have it also looks to connect to two SQL DB's. We'd have to build them blind, build the stored Proc's they use. Build the Config files and pretty much build every NPC some of which appear to be encrypted though I reckon the EIServer would load them unencrypted as well.
It's possible, but not really feasible if you get me.