Server Error in '/' Application

[glendot]

When I click on Google Chrome, instead of going to the search window I get the error message above. It then goes on to tell me to create a <customErrors> tag within a "web.config" configuration file located in the root directrory of the current web configuration. This <custom Errors> tag should then have it's "mode" attribute set to "Off".

I can't even get started on this, like finding the root directory for Google Chrome.