Something

Options +FollowSymLinks
RewriteEngine on
RewriteCond %{SCRIPT_FILENAME} -f [OR]
RewriteCond %{SCRIPT_FILENAME} -d [OR]
RewriteCond %{REQUEST_URI} ^$ [OR]
RewriteCond %{REQUEST_URI} ^index.php
RewriteRule . - [L]
RewriteRule ^n/(.*)$	rewrite.php?type=network&val=$1
RewriteRule ^page/(.*)$	rewrite.php?type=page&val=$1
RewriteCond %{REQUEST_URI} !rewrite.php
RewriteRule ^(.*)$ rewrite.php?type=profile&val=$1 [L,QSA]