Don't know if this is where to ask this--internet link icons

I've noticed that since I've upgraded my IE recently, that I cannot change the icon I prefer it have (which I've now re-assigned it numerous times) without the system automatically changing to it back to Microsoft's default one the moment I use it to reach the MS updates page.

This just won't do for me. Does anyone here know of a quick & permanent way that I can change the MS update link icon to one that I personally prefer much better (I use the bio-hazard symbol)...?