You'll probably pay a fairly similar price for most of the hotels on Harbor for those dates. Desert Inn sometimes has great rates if you book far ahead. Fairfield can be quite reasonable. I'm thinking that mostly, it's going to be right around $100-120.
If you have the Entertainment book for 2009, you might want to call the hotels, ask for in-house reservations, and ask if they do Entertainment book discounts. I think Desert Inn is on the Ent list, as well as Ramada Maingate-- might want to look at the Ent website. But, you'll almost always get better deals by calling the hotel directly.
You can go to this map of nearby hotels and click on the links, put in your dates, and just see what you come up with.
http://www.geocities.com/ashpsyche/DisneylandLinkMap.html
Also keep in mind that even if HoJo doesn't have the Ent rate, you can still get 15% off there for being a DISboard member. It's not the Hilton, but it's a 3 star hotel, nicer than most of the others except maybe Candy Cane Inn. You could also call and book your dates just in case, (along with whatever other hotel reservations you make) and if the Ent rate shows up beforehand, you can switch to the lower rate. If it doesn't, you can cancel your reservation.