скачайте USDownloader и посмотрите с чего он складается

програма для расспознавания капчи
шрифты а точнее каждая буковка отдельно в гиф файле...

Help по Antycaptcha

"AntiCaptcha.exe /help":

AntiCaptcha.exe <filename>.jpg <switches>
Command line switches:
/help this help dialog
/txtfile writes result to 'Rapid.txt'
/toppix <line> horizontal scanmode scans given line (1-60)
/angle <angle> for italic letters (1-179, 90° is default)
/match <percent> how much of the picture has to be 'identical'
/method <suffix> use method with given suffix
/threshold <x> threshold between black and white (0-255)
/accurate switches on (slower) accurate mode
/cutoff <cut> number of pixels to break through (0-59)
/bestmatch take best matching letter
/tolerance test images 1 pixel wider or smaller too
/execbot <exe> run <exe> when 'you are a bot' picture is detected
/collect save not recognized captchas
/train trainmode from commandline
/usemask find borders and use 'alpha'-mask (use with toppix)
/minwidth <min> letters are at least min pixels width
/optimized save letters in optimized format (not bmp)
/halfletters check incomplete letters on right border
/alert alert when captchas are changed
/execcapt <exe> execute <exe> when new captchas are detected
/bruteforce <x> use bruteforce mode, skip <x> pixels to left
/nores don't save result
/botretval <txt> return <txt> when 'you are a bot' picture is detected
/bothash <x> use <x> as hash for botpicture