I found the gshttp,
but acknex.exe makes a crash after closing my programm
my code:

function net()
{
// Create the HTTP Client
if (HTTP_Create(0)==0)
{

// Set the data to be posted to PostString
PostString="a=b
b=c
d=e";

// HTTP Post the URL with the PostString data
HTTP_Post(0,"http://www.yahoo.com/",PostString);

// Wait until the HTTP POST is complete
while(HTTP_IsWorking(0)==1)
{
wait(16);
}

// Initialize ResultString. Make sure you have enough characters for your result.
ResultString=" ";

// Put the results in ResultString.
HTTP_Results(0,ResultString);

// Show the results
shown();
HTTP_Free(0);
}
}