Language Specific Site Is it possible to create a site that has multiple languages available to the user?

Preferably as similarly as possible to asp.net using .resx files (see here http://support.microsoft.com/kb/917414)

Is there any modules you have used that can provide this sort of functionality?

Thanks
The internationalization collection will allow you to offer full language support for the user in the form of variables and all sorts so it is more feature full than the solution you linked.