http://www.s4ndmod.com/phpBB3/viewtopic.php?f=32&t=573
Or if s4n forum is down -
If you have PB use this - http://s4ndmod.com/downloads/patches/RTCW_1.0PB_patched_master.zip
Non PB - http://s4ndmod.com/downloads/patches/RTCW_1.0NONPB_patched_master.zip
Dont forget to backup your current exe.