php vanity url or mod_rewrite

[tunde011]

I will like to change a url from

http://www.mysite.com/doc1/doc2/index.php?name=username

to

http://www.mysite.com/user

I have tried using htaccess

Options +FollowSymLinks 
RewriteEngine on 
RewriteCond %{HTTP_HOST} ^mysite.com [NC] 
RewriteRule ^(.*)$ http://www.mysite.com/$1 [L,R=301] 
RewriteRule ^/[_a-z0-9-]+(\.[_a-z0-9-]+)$/doc1/doc2/ index.php?name=$1

But i seem stuck. Any help will be appreciated. been on google for about 7 hours