METHOD #1:
1. Extract GLHack.dll, GlHackConfig.exe, GLHack.ini, and the BMP files into your base Half-Life directiory (by default it's C:\Sierra\Half-Life, or C:\Sierra\Counter-Strike for the standalone CS release).
1a. If you've ever used other OpenGL-based hacks, delete the hacked OpenGL32.dll files.
2. Edit the gldrv\drvmap.txt file and add the following line to the end:
GLHack.dll m491c OpenGL Hack
3. Run Half-Life or Counter-Strike, and choose the hack in your video modes configuration.
Kann mir das einer ins deutsche übersetzen danke!