How to increase UPLOAD MAX FILE SIZE for DREAMHOST?

My WordPress host on Dreamhost share hosting, it’s superexcellence, but, you know, Dreamhost has the 7M MAX upload filesize limit, so I can’t do something. I checked the Dreamhost Discussion Forum and google www, find a real and simple way to resolve it. Here’s how:

1. Set up your domain for FastCGI
   Login your Dreamhost, enter Manage Domains, Edit your domain setup, in Web Options->PHP mode, select ‘PHP 5 FastCGI’, as below: 
   

   PHP5 FastCGI

2. Download DreamHost Custom PHP.ini from DeamHost Scripts and Tips.
3. Extract the dh-phpini.php from dh-phpini.zip and upload it to you website root.
4. Open dh-phpini.php in you browse. Example: http://www.yoursite.com/dh-phpini.php.
5. Then, this result shows,
   

   Install Completed

6. After install, this script create ‘cgi-bin’ folder in you website root, including ‘php.ini’ files in the folder, and add this lines in you .htaccess file, AddHandler fastcgi-script fcg fcgi fpl
   AddHandler php-fastcgi .php
   Action php-fastcgi /cgi-bin/dispatch.fcgi
   
7. Default, the Max upload file size increase to 20M, if you want to change to more, edit php.ini file in ‘cgi-bin’ folder like this,post_max_size = 50M
   upload_max_filesize = 50M