nginx rewrite

[eluser]DogWin[/eluser]
http://localhost/index.php/dogwin=>http:...ost/dogwin

rewrite rule:
location / {
index index.php;
#root /opt/lnmp/nginx/html/dogwin;
if (-f $request_filename){
expires 3d;
access_log off;
}
if (!-e $request_filename){
rewrite ^(.*)$ index.php/$1 last;
# rewrite . index.php last;
}
location ~ /index.php/ {
fastcgi_index index.php;
fastcgi_pass 127.0.0.1:9000;
fastcgi_param SCRIPT_FILENAME /opt/lnmp/nginx/html/dogwin/index.php;
include fcgi.conf;
}
In the fact ,It's not working ! I don't know why? please help! thank u very much!

[eluser]DogWin[/eluser]
sos!

[eluser]farinspace[/eluser]
these are the rewrite rules I use for CodeIgniter and NGINX...