JSON and http header

hey there,

i want to develop a little ap for controlling a website (dont want to open the browser all the time)
so i started but now its going a little bit tricky

this is what firefox says (live http headers):

http://somehost.com/file.php?getSearchResults

POST /file.php?getSearchResults HTTP/1.1

Host: somehost.com
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.1.9) Gecko/20100402 Ubuntu/9.10 (karmic) Firefox/3.5.9

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: de-de,de;q=0.8,en-us;q=0.5,en;q=0.3

Accept-Encoding: gzip,deflate

Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7

Keep-Alive: 300

Connection: keep-alive

Cookie: PHPSESSID=e4267a2dfc2a27436dac0a6c7d201525; __qca=P0-1304030846-1274529643508

Referer: http://somehost.com/main.swf?some=c44fd5e86eb33dffec1d0ea0c856804d

Content-Type: application/json

Content-Length: 368

{"method":"getSearchResults","header":{"client":"client","uuid":"D8FFCA92-01A0-1443-3484-C061F393E2C7","country":{"CC3":"0","CC2":"0","CC1":"18014398509481984","CC4":"0","ID":"55"},"session":"e4267a2dfc2a27436dac0a6c7d201525",
"clientRevision":"20100412.12","token":"c2c047158f33e66b4f85a8b652ea71458a1cab762d25a0"},
"parameters":{"type":"Books","query":"Cooking with Java"}}

HTTP/1.1 200 OK

Date: Sat, 22 May 2010 14:20:39 GMT

Server: Apache/2.2.14 (EL)

X-Powered-By: PHP/5.2.11

Set-Cookie: PHPSESSID=e4267a2dfc2a27436dac0a6c7d201525; expires=Sat, 29-May-2010 14:20:39 GMT; path=/; domain=.somehost.com

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

Vary: Accept-Encoding

Content-Encoding: gzip

Content-Length: 18153

Connection: close

Content-Type: text/html; charset=UTF-8

so i started creating the JSONObject with the json.org library but now i get stuck...

i use HtmlUnit to open the file.php?getSearchResults but how should i pass the JSONObject to it?

this is the first time i do such expert stuff, so please be patience with me

ps.: i didnt know where to post this, so i hope this is the correct forum

got the solution... just used HttpClient, PostMethod and added the application/json content