use pretty much any type of grease. white lithium grease would probably do, as would generic wheel bearing grease. Just make sure that all of the old grease is removed using solvent, or cleaner.
BTW, my Milano is a late car (89), and on mine the window regulators were different than any ive seen previous. It was really painful to get the thing apart in one piece. I ended up just getting an early mechanism and re-lubing it instead.
as for the badge, I have no idea...you might try someone who wrecks Alfa's a lot like Larry at APE.