>Hi, Naoto:
>
>I strongly thank you very much. All this time I was feeling alone on a desert island...
>
>Before reading your reply I was testing with Winsock since the technical suppor (it's a way to name it) told me it's not necesary to know C++ for that. But he didn't tell me I have to use winsock.
>
>Now I could receive data from the aparatus but I have to test for sending data to it.
>
>Well, once more, thank you very much.
>
> Héctor
You're quite welcome.

BTW, one thing you have to be careful when dealing with calls to the API, especially if it involves data structures, as there is no simple equivalent in VFP -- especially if they contain pointers to buffers. Pointers in structures that are filled in by the API are one thing, pointers that you have to initialize within structures you're passing to API calls is another thing (sometimes you could luck out in particular cases as you could pass NULL pointers to specify you're not interested in receiving some sort of data back).