'This is a Manymacros example:
'The script fill the captcha of gmail. The red part is needed to modify by your self.
VERSION BUILD=6221002     
TAB T=1     
TAB CLOSEALLOTHERS     
SET !EXTRACT_TEST_POPUP NO
URL GOTO=https://www.google.com/accounts/NewAccount

'Step 1: save the captcha picture to local disk
FILEDELETE NAME=c:\captcha.jpg
ONDOWNLOAD FOLDER=c:\ FILE=captcha.jpg    
TAG POS=1 TYPE=IMG ATTR=ALT:Visual<SP>verification  CONTENT=EVENT:SAVEITEM 

'Step 2: Open the a new tab, and go to bypasscaptcha.com, and submit the captcha picture
TAB OPEN
TAB T=2
URL GOTO=http://bypasscaptcha.com/captcha.php?x=x
'The KEY is used to identify each of our customers, which you can get from the purchase page . It is assigned to the CONTENT.
TAG POS=1 TYPE=INPUT:TEXT FORM=ACTION:upload.php ATTR=NAME:key CONTENT=KEY
'The path of the captcha picture saved is assigned to the CONTENT
TAG POS=1 TYPE=INPUT:FILE FORM=ACTION:upload.php ATTR=NAME:file CONTENT=C:\captcha.jpg
'Submit the userid and the captcha to bypasscaptcha.com
TAG POS=1 TYPE=INPUT:SUBMIT FORM=ACTION:upload.php ATTR=VALUE:Submit 

WAIT SECONDS=#DOWNLOADCOMPLETE# 

'Step 3: Extract the characters that are recoginzed from the picture of captcha.
TAG POS=1 TYPE=FONT ATTR=TXT:* EXTRACT=TXT  
TAB CLOSE
TAB T=1

'Step 4: Fill the recognized characters to the verification box
TAG POS=1 TYPE=INPUT:TEXT FORM=NAME:createaccount ATTR=ID:newaccountcaptcha CONTENT={{!EXTRACT}}