I would suggest a program called Dashboard.
It is avaliable from snoopsoft and only cost USD$13, which is about AUD$18.
It allows you to display as many days as you would like on the Today screen. It also will show you your tasks on the today screen instead of just the number of task.
It came free with my iPAQ 3800, and when I got my XDAII I found I couldn't live without it.
I extremely recommend it.