Paypal Integration Component: What is it? and Where is it? - Joomla! Forum - community, help and support

i on site (found in joomla! forum) http://mydemos.org/administrator/index.php.  log in is: manager.  password manager.  under components column noticed paypal integration module. 

1. difference between component , virtuemart? 

2. benefit of usine if have virtuemart installed?

3. work joomla!? 

4.  can download it? 

thanks!

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