Texture pack for escape from area 99 if you have Half-Life Resrced 1.0.
First : If you haven't already, download and install Half-life ReSrced 1.0 and make efa99 a mod of that game.
Second: change your config and put the line
Extract the "common" file into your efa99/materials folder. If you dont have a materials folder in efa99, make one
Thirdly: check allow materials in the mod when you start it up (dont know if its necesarry but I have it checked)
Fourthly: for the best result I advise you to also use the textures pack I made for Half-Life ReSrced and put that in your valve folder and do the same steps for that as for the efa mod.