In search of to-do list software

First, the bad news: I don't have any pictures of the roller derby game to show you. I will, because Gina gave me a CD full of shots she took, but I haven't had time today to look through them. Sorry about that. Perhaps later this week.

Now, to my current problem: I can't find to-list software that does what I want. Specifically, I want to arrange a group of categories of tasks on a display so that the categories appear in rows. Each category's entry would be a box that would scroll if the category had more tasks than would fit. The whole window would scroll if I had more categories than available display real estate. This is the sort of work "dashboard" that I do on paper to organize myself, but I want to do it on a PC (or Mac) so I'll have the data electronically.

I've tried Outlook, of course, but it can't do the job. Its only organization of categories is a vertical stack.

I've Googled a bit and followed many links, but so far I've not encountered any program that can do the job.

Does anyone know of software that might fill this bill? If so, please drop me a line via the Web site or post candidates as comments here.

Thanks!