mod rewrite .htaccess

[athora]

I want to change the visitors browser url "example.com/download1.php?book=name.zip"
as
"example.com/download1/book/name.php"
Can Anyone guide me to write a .htaccess mod rewrite rule?

[athora]

Sloved
webmaster-toolkit.com/mod_rewrite-rewriterule-generator.shtml

[mahipat]

mod_rewrite rewriterule generator :: Webmaster Toolkit

Added after 2 minutes:

Oops You Posted 1 Minute Ago Same :P

[karson]

.htaccess Rewrite

RewriteEngine On
RewriteRule download1/book/(.*)\.php  /download1/book/$1.php [L]