I posted a question some days ago about getting started in wireless/ moblie development.

I'm going to be a more specific this time and hopefully someone will be able provide the information I need.

I have a PDA. I don't know exactly what kind of OS is on it, but it has Pocket Word, and Pocket Excel. I assume its Microsoft. (It's not my PDA by the way..I'm just using it as an example. )

I want to develop a little application for this PDA. I want to put an icon on the PDA desktop and when I click on it, I want a message box to go 'Hello World!'.

I also want a message box to appear on the monitor of whatever computer I am wirelessly networked to.

What software development tool would I use to make this application ? Windows CE? Pocket PC 2002? Something else?

Also: Does it HAVE to be this software tool, could it be another ( possibly cheaper ) software development tool ?

Thanks for all the help! I hope these questions are specific enough to generate the answers I'm looking for.

Have a great day!