Help using winhttp to send data using linksave API

[Mithrandir]

This is my first time working with an API. I chose this one: http://linksave.in/api Here it's what it says:

For registered users:

The following data has to be sent by POST to our API:

They are:

URL: http://linksave.in/protect?api=[username]:[Password]

Field name: Value:

*save = TRUE

*links = [Links](seperated each by a line break "\n")

mirrors = [Mirrorlinks](seperated each by a line break "\n")

foldername = [Name of the folder]

myprotection = container_js (Container and webprotection)

container_plain (Container and premiumlinks)

container (only container

plain (only Premiumlinks)

js (only Webprotection)

container_types = rsdf ccf and/or dlc(not seperated)

container_name = [only Webprotection](if empty then foldername)

category = [name or number of the cateorgy, in which the folder will be moved; 0 for no category]

advertisement =

banner

bannerurl = [bannerurl](URL to bannerpicture)

bannerlink = [bannerlink](Link banner with this URL)

location = captchaseite(Show banner on captchapage)

frame(Show banner in hosterframe)

unten(Show banner below the links)

oben(Show banner above the links)

adminpassword = [adminpassword](if empty then random password)

visitorpassword = [Password to visit the folder]

cover = [Describing picture of the folder contents]

website = URL to your website

captcha = on or off

notify = 1 or 0 (Notification if files are offline)

email = [E-mail-address for notifications]

* = Required

Improtant: If you leave one or more fields empty, the corresponding value from your userCP-settings will apply.

Return values:

Standard = http://linksave.in/[Folder-ID]

[On error(s)] = ERROR

[Exact Errormessage(s)](seperated each by"|")

The problem that I found is that I find the documentation quite ambiguous or maybe it's my lack of experience, anyway I coded this:

#include <WinHttp.au3>

Global $sUserName = "Myuser"
Global $sPassword = "Mypass"
Global $sDomain = "www.linksave.in"
Global $sLinks = "http://www.fileserve.com/file/bByhbBm"
Global $sAdditionalData = "save=TRUE&links="&$sLinks&"foldername=testfolder&captcha=off"
;Global $sAdditionalData = "ordnername=testfolder&links=http%3A%2F%2Fwww.fileserve.com%2Ffile%2FbByhbBm"& _
;"myschutz=container_js&container_rsdf=1&container_ccf=1&container_dlc=1&captcha=N"

Global $hOpen = _WinHttpOpen("Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6")

Global $hConnect = _WinHttpConnect($hOpen, $sDomain)

Global $hRequest = _WinHttpOpenRequest($hConnect, "POST","/protect?api="&$sUserName&":"&$sPassword)

_WinHttpSendRequest($hRequest, "Content-Type: application/x-www-form-urlencoded", $sAdditionalData)

_WinHttpReceiveResponse($hRequest)

Global $sReturned
If _WinHttpQueryDataAvailable($hRequest) Then
    Do
        $sReturned &= _WinHttpReadData($hRequest)
    Until @error
EndIf

_WinHttpCloseHandle($hRequest)
_WinHttpCloseHandle($hConnect)
_WinHttpCloseHandle($hOpen)

MsgBox(0, "Returned", $sReturned)
ConsoleWrite($sReturned)
FileWrite(@ScriptDir&'/htmlreturned.html',$sReturned)

I even saved a link manually and traced the process with live http headers in firefox. I saw that the additional data was sent in german so I try that -That's the 'Global...' that is commented in the code- but it didn't function either. In both cases it returns the page in the html as if I had used a get request I'm quite puzzled. Can anyone give me some directions? Thanks for your help!

Edited June 15, 2011 by Mithrandir

[Mithrandir]

Still no idea of how to solve this...

[Mithrandir]

If I need to elaborate a bit more on the problem just say it.