I've been using Ethereal to capture packets. Here's the conversation:
POST /pbupload.php HTTP/1.1
Host:
www.civstats.com
User-Agent: CivStatsUploader/1.5.0.3
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 113
Func=Init&ID=1000&Pass=test&UploaderVersion=1.5.0.3×tamp=1188651831&NumPlayers=9&UseTurnTimer=1&GameName=abc
HTTP/1.1 100 Continue
Server: Microsoft-IIS/5.1
Date: Sat, 01 Sep 2007 13:02:09 GMT
HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Sat, 01 Sep 2007 13:02:09 GMT
Connection: close
X-Powered-By: PHP/5.2.1
Set-Cookie: PHPSESSID=ksg2341fags7jocas80s8qb2t4; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-type: text/html
pbupload:1|queries:1|critical:0|error:Server ID or Password incorrect.|