This article should help.
http://west-wind.com/presentations/VfpDotNetInterop/DotNetFromVFP.asp>Hi All,
>We need a .NET dll, it should work with VFP. Our developer generates .NET DLL but VFP cannot see that DLL. That doesn't matter .COM .DLL or not. Just work with VFP enough for us... What he should do when generates DLL for VFP?
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer