If you're serious about developing .NET applications then you should read this book to get yourself up to speed on how you might make your apps ready for shipping across the world. Even if you never intend shipping your applications outside of your home country it'll give you an insight into the issues and challenges that you might face should you later change your mind.
The book covers .NET 1.1 and 2.0, showing how the .NET 2.0 Framework make internationalization a whole lot easier.
Developers will get a lot from this book, but it'll also prove really useful for everyone on a delivery team - testers, project managers etc. It will give non-developers an insight into the efforts involved in making an application work in many languages, and will help non-developers plan accordingly.
The book is well written, and very easy to read. It's a good technical book with plenty of good samples and walk throughs.
This is one of those books that all .NET developers should have access to.