Auto complete script for a webpage

Hello, I need an auto complete script for this site [login to view URL] , for their buyback section ( sell) . The script needs to scan my database (an excell/notepad document or something similar) for stock and realms , refresh the page on offgamers and when the script gets a match it must autocomplete the quantity and the captcha code (1 second , better if the script completes in 500ms)(the captcha code uses + ,- ,* and small numbers from 1 to 9) ( and audio alert ) , after that the script needs to start over. This critterias must be completed in a second (complete quantity + captcha) .