Thanks Evan

I have downloaded this file, and I will see it later.

But I found I way to do it.

This is my example, and I think it resolve my problem:

cSendTo = "C:\Archivos de programa\Netscape\Communicator\Program\sendto32.exe" + cFile1 + " " + cFile2

= WinExec(cSendTo, 10)

It opens a new message with the files attached, ready to write the address.

I haven't found() how to pass the parameter for address and subject.