Help–problem with IE on Window XP

I have a small problem, I have a computer that runs Windows 2000 and when I go to the interent to aircanada.com and I start to fill in the place I want to fly if I type the first 3-4 letters the town pops up and I can choose it. With my laptop that is running XP when I start to type the first 3-4 letters nothing comes up at all. Is there something I need to do to my XP laptop to make this come up. Thanks