Hi Michal,
I dont think WA has any way of posting the bets automatically except through their website you would have to craft the http requests yourself or send the data to the clipboard for a quick paste into their bet area

UniTab have NetBet pro which can accept bets in a file system folder that is pretty efficient from what I understand.

They also have a query mechanism using netbet pro to get race information which saves the pain of scraping a website

Does anyone happen to have a list of format of the commands the data query netbet pro supports?

Nibbler