Thisis my defualt config:
#
# The default server
#
server {
listen 80;
server_name _;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root /usr/share/nginx/html;
index index.html index.htm index.php;
}

error_page 404 /404.html;
location = /404.html {
root /usr/share/nginx/html;
}

# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}

location /phpMyAdmin {
alias /usr/share/phpMyAdmin;
index index.php index.html index.htm;
}

location ~ /phpMyAdmin/.*\.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /usr/share/$uri;
fastcgi_intercept_errors on;
include fastcgi_params;
}

location ~ \.php$ {
try_files $uri =404;
root /usr/share/nginx/html;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
location ~ /\.ht {
deny all;
}
}


Which part I must add /home/user/web??
Sorry I'm newcomer in nginx and my english is very bad.