I have installed no one lives forever successfully. but the nolf.exe was giving a 'not a valid win32 application' error. i have even unzipped all the wav files. finally, i ran the following command from dos prompt :
LITHTECH.EXE -windowtitle "No One Lives Forever" -rez NOLF.rez -rez NOLF2.rez -rez NOLFdll.rez -rez NOLFl.rez -rez custom +multiplayer 0 +DisableMusic 0 +DisableSound 0 +DisableTripBuf 0 +DisableHardwareCursor 0 ++RenderDll d3d.ren ++CardDesc display ++Renderer "Primary Display Driver" ++screenwidth 800 ++screenheight 600 ++bitdepth 32
then the game started but unfortunately i cant hear anything. the sound levels r high and at max volume. i dont know what the prob is. if anyone has had this kinda error and know how to solve it, plz let me know.