You can remake extractors, sure, or you can add your DBCs into patch-enGB-3.mpq and all your data into patch-3.mpq. Making backups of both before editing them should be quite obvious thing to do. More info here:viewtopic.php?f=22&t=8652&p=41609Btw, you don't have to use that edited extractor there. In fact, I can't recommend doing so, because its getting outdated.
pArchiveNames.push_back(input_path + std::string("lichking.MPQ"));