Simply open a notepad file, paste it the script, then save it as autoexec.cfg
in your steam/steamapps/username/counter-strike/cstrike file

Once ingame, hit the ` (button to the left of 1), then type exec autoexec.cfg

Код:
ALIAS HE              "hegren"
ALIAS Smoke     "sgren"
ALIAS Colt/ak47 	         "m4a1;ak47;primammo"
ALIAS .MP5    "mp5;primammo"
ALIAS Famas/Galil 	         "Galil;Famas;primammo"
ALIAS xDeagle     "Deagle;secammo"
ALIAS xAwp     "awp;primammo"

BIND KP_UPARROW    "Famas/Galil"
BIND KP_END     "xDeagle"
BIND KP_DEL     ".MP5"
BIND KP_PGDN     "Colt/ak47"
BIND KP_5     "flash"
BIND KP_LEFTARROW 	         "HE"
BIND KP_RIGHTARROW 	"Smoke"
BIND KP_DOWNARROW 	         "vest;vesthelm"
BIND KP_ENTER     "xAwp"