What do you want to do with it?
I have all my jobs listed in microsoft outlook which i then synchronise onto my palm z22.
I do my accounts on excel and did download a program for it to use with the palm but i didn't see the point as i always do my accounts at the end of the day and not when i'm out working.
You can make your own programs using visual basic if you have the knowledge.
I dunno how much it costs but you can download or buy a p2p program like zultrax and could download visual basic for free. The same for most software as well. It's not legal though.