edit: well, I stumbled over my first problem. login requires a captcha test where the bot has to prove it's not a bot, haha

most likely it's possible to login in manually the first time and copy the cookie, I have to try that.
If you want to post, you'll need to store the session check too. It's the the 128-bit number after "sesc=" in the url. There's a hidden field in forms named sc which also needs to be set to this number.