Chage mod rewrite

[inigo]

Hello Rafa-el

in the phpbb forum I use this .htaccess

RewriteEngine On 
RewriteRule ^forums.* index.php 
RewriteRule ^forum([0-9]*).* viewforum.php?f=$1&mark=topic 
RewriteRule ^viewforum([0-9]*)-([0-9]*)-([0-9]*).* viewforum.php?f=$1&topicdays=$2&start=$3 
RewriteRule ^forum([0-9]*).* viewforum.php?f=$1 
RewriteRule ^ptopic([0-9]*).* viewtopic.php?t=$1&view=previous 
RewriteRule ^ntopic([0-9]*).* viewtopic.php?t=$1&view=next 
RewriteRule ^ftopic([0-9]*)-([0-9]*)-([a-zA-Z]*)-([0-9]*).* viewtopic.php?t=$1&postdays=$2&postorder=$3&start=$4 
RewriteRule ^ftopic([0-9]*)-([0-9]*).* viewtopic.php?t=$1&start=$2 
RewriteRule ^ftopic([0-9]*).* viewtopic.php?t=$1 
RewriteRule ^ftopic([0-9]*).html viewtopic.php?t=$1&start=$2&postdays=$3&postorder=$4&highlight=$5 
RewriteRule ^sutra([0-9]*).* viewtopic.php?p=$1

the .htaccess of vbulletinsuite

RewriteEngine on

# If you are having problems or are using VirtualDocumentRoot, uncomment this line and set it to your vBulletin directory.
# RewriteBase /forum/

RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d

RewriteRule ^.*$ - [NC,L]

# Forum
RewriteRule ^threads/.* showthread.php [QSA]
RewriteRule ^forums/.* forumdisplay.php [QSA]
RewriteRule ^members/.* member.php [QSA]
RewriteRule ^blogs/.* blog.php [QSA]
ReWriteRule ^entries/.* entry.php [QSA]

RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d

RewriteRule ^.*$ - [NC,L]

# MVC
RewriteRule ^(?:(.*?)(?:/|$))(.*|$)$ $1.php?r=$2 [QSA]

Where is {REQUEST_FILENAME}?

regards