POST / HTTP/1.1
User-Agent: Opera/9.80 (Windows NT 6.1; U; ru) Presto/2.6.30 Version/10.63
Host: post.imageshack.us
Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1
Accept-Language: ru-RU,ru;q=0.9,en;q=0.8
Accept-Charset: iso-8859-1, utf-8, utf-16, *;q=0.1
Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0
Expect: 100-continue
Referer: http://imageshack.us/?no_multi=1
Cookie: is_uuid=95d048abb56c4edba6064e37de57ffd7; imgshck=0e38803e1234e8e55ce396daf2099c40; lang=ru; __gads=ID=d9ab44309f0dfa37:T=1289065460:S=ALNI_Ma3HJ8VeYVLArHBJEj4SnkgpC1rbA; __qca=P0-161099757-1289065481322; nevershow=y; un_cookie=1; __utmz=179800571.1289227468.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=ImageShack; new_imageshack=y; no_multi=1; latest=img560; __utma=179800571.1992250727.1289065468.1289065468.1289227468.2; __utmc=179800571; __utmv=179800571.HomePage; __utmb=179800571.8.8.1289227517047
Cookie2: $Version=1
Connection: Keep-Alive
Content-Length: 273478
Content-Type: multipart/form-data;

uploadtype      on                                                                
fileupload      здесь лежит файл (задаешь путь в свойстве)
url                                                                         
email                                                                  
MAX_FILE_SIZE   13145728                                     
refer                                                                 
brand                                                                      
optimage        resample                                                  
optsize         resample                                                  
rembar          0