My first suggestion would be to move the crate into your room, as Poodlesmom said. If you look at it from Archie's point of view, you'll understand that he's in a pretty scary situation. He's never slept by himself before; he's had a mom and littermates to keep him company. So yes, continue to ignore him at night, but try to get him as close to the head of the bed as possible so he can hear you breathing and moving around.
A puppy Kong isn't a bad idea, but I usually try not to go nuts with special "treats" on a dog that young, mostly because it seems to affect their digestive system. Try going to Goodwill and finding a good-sized stuffed animal or baby blanket you can put in there with him. (Make sure it's not so big that it takes up all his crate space.) Then he'll have something large and warm to keep him company. And, because it was from Goodwill, you won't be upset if it gets peed on or chewed.
I recommend this sort of treatment for a puppy that young because I have seen, over and over, puppies that develop maternal seperation anxieties. This seems to happen mostly to sensitive dogs that are forced into an unfamiliar environment before they're ready. It's really kind of heartbreaking to see a 12-year-old dog that can't fall asleep without sucking on his blankie! Keeping his crate near you at night and getting him some inanimate "company" will help him develop his independence in a psychologically healthy way.
Going back to the Kong, if you want to see if it keeps him amused (and therefore keeps him from whining) at night, try to stuff it with something a little more digestive-tract friendly than doggie toothpaste. The Kong Company makes "Kong Stuffin'" in a can, which you can find pretty much anywhere that sells Kongs. It's meant to be consumed in Kongs, so it's a little safer. You can also push a few small treats in (see if you can find some Old Mother Hubbard brand treats; they're small enough and tend to be a bit healthier than other biscuits), squirt in some Kong Stuffin', and toss the whole thing in the freezer for a couple of hours. It'll take him much longer to get all the yummies out if it's frozen to start with. But again, don't go nuts with this. 2-3 Kongs a week is probably plenty, and it will probably cause some noticable intestinal disturbance, but nothing serious.
PS - I just found this wandering around the Doggles website:
http://store.yahoo.com/doggles/comfortpup.html
I'm definitely going to try it out on my next puppy! (Although I haven't had a puppy in a long, long time! I'm strictly a rescue mommy, and I always end up with the "hopeless" ones that no one else wants!
lol!)