When you download the Admin Mod ZIP file, you need to be sure to unzip it and use the folder information in the ZIP file – This means that when you unzip the file, it will create a folder called Admin and several subfolders inside the Admin folder, as shown in the figure below.
You unzip the Admin Mod distribution to the SAME FOLDER that contains HLDS.EXE or HL.EXE. This directory is also the directory in which your game mods are installed, so you will see a subdirectory for each of your mods here (in the case of a Linux server, we are talking about the same directory as the hlds_l .so runtime). Typically this means that you unzip it into the c:\SIERRA\Half-Life\ directory or similar. DO NOT unzip the file into your game mod directory! If you do, you will have problems.
If you don’t see these folders/directories after unzipping the file, you have done something wrong, so STOP NOW and save yourself the headache. You most likely did not use the folder names included in the ZIP file.
Next: Running the Windows Installation Script