Thank you very much for the tutorial. This is the only place I could find that had a tut about the winsock and http.

I have made a new thread about this problem here if you would be so kind as to read it

I can log into phpbb forums but when I try to post I get

Invalid Session. Please resubmit the form.

I'm sending the following to the server:

POST /community/posting.php?mode=post&f=26&sid=e5ab54e065e67b736f0e04e30287e880 HTTP/1.0
Host: www.phpbb.com
Accept: "/"
Content-Type: application/x-www-form-urlencoded
Referer: http://www.phpbb.com/community/ucp.php
Content-Length: 54
Connection: Keep-Alive
Cache-Control: No-Cache
Cookie: phpbb3mysql_data=a%3A2%3A%7Bs%3A11%3A%22autologinid%22%3Bs%3A0%3A%22%22%3Bs%3A6%3A%22userid%22%3Bs%3 A5%3A%2286360%22%3B%7D; phpbb3mysql_sid=e5ab54e065e67b736f0e04e30287e880

subject=Thanks&description=&message=Thanks&post=submit