>>Looking at the device, it is not a simple scanner but is a mobile pc device with a scanner. Do you have one now to use with development? You need to look at the tools it comes with and do some testing. I think John Baird works with handheld devices and .net. Hopefully, he will jump in here to help you get started. Look at this site and the tools it comes with:
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>I'm going to check this site. I was also hoping for John's input as to how get started.

I'd probably just do this as a Compact Framework app. Download the Windows Mobile SDK (assuming you have Visual Studio). It will install a new set of templates. Create a new project from it (it has a little wizard which customizes it to diff versions as part of the template). It's very similar to just writing a normal .NET WinForm app, except the screen is a lot smaller. You can decide how you want to store your data - their is a compact version of SQL Server, "SQL Server Compact" that you can use if you need it. The SDK includes an emulator so it's easy to just run/test your app.