Emulate Numberpad 2.49?

My number pad for some reason is not working to navigate and I was wondering if there was a way ( as with 2.56 beta) to emulate the number pad on Blender 2.49. I can’t find a User Preference button which is what it is under on 2.56:( please help

See here http://www.screencast.com/users/blenderwho/folders/Jing/media/811b7126-08ef-4a17-91c2-020e047e10cc