Osclass Plugin

General information for the business: We have a classified ad website
Description of requirements/functionality: I need a very clean, smooth and 100% bugs free geo ip country redirect plugin for OsClass. My website is a classified ad website. For example when a visitor from Brazil type or click on my website : xyz.com, he will be directed to brazil sub domain page in xyz.com. I do this because I don't want to make my xyz.com a worldwide look classified ad. I want it to become a nationwide for every countries visitors. When a visitor from Brazil already in Brazil sub domain page, he didn't see any countries list on the category dialog box accept states or provinces of Brazil. So every visitors from any countries will be automatically directed to their own country sub domain page. They will not able to access to real home page of xyz.com. So their about 200 sub domain pages .Q: do I need to install a whole theme or a whole website for each country sub domain page?. This plugin must be tested oftenly to ensure there are no bugs at all. It should have no conflict with any web browsers thank you.
OS requirements: Linux
Extra notes: PHP 5.XX, OsClass 3.xx, MySql, GD, etc