agree with VoG™. pcpitstop is ok but with most of these online health check or analysis software do not believe all they tell you. everest home edt. click here is a good info tool and 9 times out of ten its accurate, it comes in very handy when you dont know exactly what hardware you have inside the box.
im not very well clued up about active x but in simple terms i believe it to be active content within a website ie/ when you click a download link a pop up apears to enable you to download or interact stream music or video ect within the website. xp sp2 blocks most active x untill you click the yellow banner and allow it. if you have just clicked a download link and you trust the provider allow it otherwise leave alone.
more info click here