Control Panel\Devices and Printers/{hp photosmart 6280}
right-click on the printer in the "devices and printers" off the control panel.
choose printing "preferences"
click the "maintenance" tab--perhaps there's a view ink detail button there
There should be an HP folder off the start menu, which, if you click, might have a (photosmart) application that has options you can set "to open the program when windows starts up"....then a little box might be there, near the clock, to show you a real-time ink-level display.