>TIA for all Mark . now i wantto learn howto use CA ,SOAP,.net toolkit for vfp . i wantto migrate my apps with these technics. how would be your suggestions for start these matters ?

Start here: http://www.gotdotnet.com/team/vfp/

Then post new threads in the .Net forum when you encounter problems.

As for the CA, there are numerous threads in the VFP8 Category in VFP Forum here. There is also substantial comments in my CABuilder.PRG file to get you started. Just start trying it out using my builder, look through the code in the CA classes that my builder creates, then post new threads when you hit a problem.