I'm looking to use WebERP, but before installing and using it, I would like to know when it is installed if we can use it locally. What I want to mean is do I need internet connection to use it or if it can be install on a WebServer with no access to the internet
It is an internet application ... it needs to be installed on a web-server.
However, this does not mean it needs to be on an external network. You can install a web-server on a single machine and use it off a single machine see XAMPP all in one apache/mysql/php installer.
Using webERP on an internal LAN is a good way to use it in my view as the performance is fantastic and security much less of a concern too. If you want to provide external access from the internet you can open up a port to allow traffic in at some future point.
Phil Daintree
webERP Admin
Logic Works Ltd
http://www.logicworks.co.nz