|router.php is used to change the non-sef into sef urls in Joomla 1.5. This file does the same for Virtuemart component and you don’t need to use third party SEF component to make your category and products page search engine friendly.
How to use:
>> Enable SEF from your site’s configuration.
>> Make sure you rename htaccess.txt to .htaccess (Very important, if you don’t do it you may get 404 error)
Following issues have been fixed in this version
1.) Feed page has been made SEF
2.) Category page url has all parents category nested (Upto 3 levels ONLY: E.g. www.yoursite.com/category/4/power-tools/outdoor-tools.html
3.) List all products from Virtuemart module has been fixed