how i can install asphalt5

error cd can t plss tell me how to install it

went i use xterminal
mkdir -p /home/user/webos/gamesave
ln -s /home/user/webos/gamesave /media/internal

and i as tell file exists

want i set cd /home/user/applications/com.gameloft.app.asphalt5/Asphalt5

i enter her say /bin/sh: cant ' t cd to /home/user/applications/com.gameloft.app.asphalt5/Asphalt5
pls tell me wat problem is