You might check this out … I snagged it from drupal.org — they rewrite the index.php with mod_rewrite.

# Various rewrite rules
RewriteEngine on
# Modify the RewriteBase if you are using Drupal in a subdirectory and the
# rewrite rules are not working properly:
#RewriteBase /drupal
# Rewrite old-style URLS of the form 'node.php?id=x':
#RewriteCond %{REQUEST_FILENAME} !-f
#RewriteCond %{REQUEST_FILENAME} !-d
#RewriteCond %{QUERY_STRING} ^id=([^&]+)$
#RewriteRule node.php index.php?q=node/view/%1 [L]
# Rewrite old-style URLs of the form 'module.php?mod=x':
#RewriteCond %{REQUEST_FILENAME} !-f
#RewriteCond %{REQUEST_FILENAME} !-d
#RewriteCond %{QUERY_STRING} ^mod=([^&]+)$
#RewriteRule module.php index.php?q=%1 [L]
# Rewrite URLs of the form 'index.php?q=x':
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]