What licensing models are available? There are two licensing models: Basic fee + royalties per sold license (royalty) Without a license fees (royalties free) For details, please contact us. Which operating systems are supported? Cad2Cad Solution Box may be operating unde: Windows Vista Windows 2000 Windows 2003 Windows XP What development environments are supported? Cad2Cad Solution Box DLL supports: ASP.NET C# Visual C++ .Net Microsoft .net 2003 Microsoft Visual Studio 6.0 Microsoft Visual C++ 6.0 Visual Basic *