Running the VPKTool, find the assetslib.vpl Inside your EverQuest 2 directory
Open VPK file will bring a browse for file, search for the EQ2 directory and select assetslib.vpl
After loading, right click each sub tree and extract the folder, zones, voiceover, clientvdl, all the _exp10 etc
This will allow you to extract EQ2 packed files into readable files for Map Editor
The VPKTool can sometimes crash, this is why extracting folder by folder is valuable. If necessary try subfolders to a parent should you encounter a subset of files crashing the tool.