>Check out the VFP2C32 project on VFPX. It's a wrapper around Windows API calls and envelopes PING and many others.

Thanks. It may have been useful. But, if at all possible, I need to embed the whole process within the existing VFP EXE.
If we implement this it will have to be rolled out across 3000+ sites. Pushing out an EXE is relatively simple ; having to package up additional files such as FLLs would mean a more complex install operation