Well I've been getting strange response when trying to TAB thru running Window programs in the last few days. Today I started several IE windows and no FF windows, and then tried it, and I got some popup from one of the running program. So it appear that the use of ALT & TAB in MacroExpress is indeed unreliable. I should have mentioned that I'm running XP Pro SP3 and ME Ver 2.1e with the keyboard plugged thru a USB port, and this may be the cause of the weird tabbing response. Can anyone confirm this so I will know that I need to upgrade ME to ver 3.x?