How to define Meta tags on Views? Is there any module or some configuration that I can define the meta tags for the views page display in drupal 7 using Views 3.0?
The Metatag module has views integration from the box since 7.x-1.0-beta2.

Install the metatags_views submodule and you'll get metatag options in the views UI for any views page display (Paul Querol's comment below).