oh, i read the code and re-read this thread, and im pretty sure the timezone thing should always be -5.
as for using vista, make sure under "window color and appearance" you're using windows vista basic. also, you want to be running pokerstars as an administrator (you can change it in a checkbox in properties)
also, run AHK as admin (read here:
http://forumserver.twoplustwo.com/showfl...e#Post12239387)
also, is your UAC on? i turned mine off, and mine works good.