Rewriting with Apache

I have this setup ..

• /plain index file
• /sub_dir1
• /sub_dir2 (<-subdomain)
• /sub_dir3
• /blog (<-wordpress)
• /etc/

but want this ..

• /wordpress
• /sub_d开发者_JS百科ir1
• /sub_dir2 (<-subdomain)
• /sub_dir3
• /etc/

Is this possible with wordpress' rewrite rules etc? Any advice on the Apache rules?

Cheers, Jeremy

RewriteEngine On    
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ blog/index.php?/$1 [L]

Should rewrite everything which isn't a file into the blog folder.