>The VFP app is using VFP as the backend. We have tons of data and are moving to SQL. His argument is that since we are not using VFP for the backend, why use it at all. We also don't have very many VFP developers here. We have several people that know C#.NET

You might want to point to MS as the reason to wait to move it to dot net. MS is woking on a newer version of dot net that will include many of the data handling features of VFP. The reason they are using VFP as the model is because VFP is the King of data munging!