No, we are not using the Extender. The .NET-VFP integration is native in Arnica WebPlatform, which incorporates VFP scripting, C#, VB.NET scripting and PHP scripting within the same application (more languages are planned to be added soon - Perl, Ruby, WHS). Most of our customers are using the VFP for data driven part, C# for other OS-bound programming where it is easier, for example for Active Directory access, SMTP access. After all our approach is to create "language nuetral" environment.