Microsoft .NET is an advance in programming technology that greatly simplifies application development, both for traditional, proprietary applications and for the emerging paradigm of Web-based services. .NET is a complete restructuring of Microsoft’s entire system infrastructure and represents a major learning challenge for programmers developing applications on Microsoft platforms. There is substantial change to the Visual Basic language, including its object-oriented features. But learning the new programming language is only part of the challenge. The much greater challenge is learning the .NET Framework and all its capabilities.