Same instructions as Tricky's - Highlight the item you want and hit enter to pull up the 'Price History, Bid, and Sort' menu. Highlight bid and the bot will do the rest.
Settings: Look in the macro, pretty straight forward. Windower or not, location of windower, and bid-price.
Notes: Make sure ffact is in a folder called FFACT inside wherever you put this macro.
-Alt-F1 starts the bot, Alt-F2 stops it - keep pressing alt-f2 - timing is not great.