Hi Graham,

SetupBuilder makes use of the core WINSOCK component (to lower the
"false-positive" rate to an absolute minimum). The installer does not use
WININET. But of course, Alberto can write his own small (WinINet) DLL and
call it from within SetupBuilder, absolutely no problem.

IMO, the preferred method to handle this task (send a request to the server,
let the server validate the serial number, etc. and send back a status code)
is the HTTP POST method. That's what most SetupBuilder users are doing.
The method can be used for serial number validation, maintenance code
validation, online maintenance extension, email message sending, etc.

Friedrich