over the past couple of days i keep getting asked by microsoft to validate my copy of office. i have passed the check with IE but it still keeps asking me to do it as i usually use mozilla. on the mozilla page it asks me to download an OGA file which doesn't work, then asks me to "validate" which then asks me to download a file called legitcheck.hta. does anyone know what this file is? office works fine on my computer and i won't want anything changing. if i download legitcheck.hta what will it do? if i'm not happy to download it how can i stop these annoying messages coming up? i have disabled it on the plugins on mozilla and its not on IE, still it constantly reappears.

help!