.net - Developing for mobile devices and desktop -

I'm starting a new project, it will run on Windows CE, Windows Mobile 6 devices, and there will also be a desktop version . This software will connect to some devices via a serial port, it will use its own protocol.

Connect to the device

Send and receive information

Read and write binary files

Will be shared between desktop and mobile devices. I am searching for the information I need, but I still have a doubt:

1. If I prepare a solution to solve Windows CE devices, will it be Windows Mobile 6 Will also work with?
2. Creating a Class Library to target Windows CE will give me trouble using it in the desktop version? (When I add the reference to that class library, my VS says that I can get some unexpected results)
3. Install .NET CF 3.5 on the devices running Windows CE 4.2 Is it possible to do?

Thanks!

1. Windows Mobile is probably built on CE, but it does not include everything for the OS is. If you use the CE feature which WinMo does not have, then it will not work, as it is said about creating an application for WinMo - whether it can run under Windows CE or not.
2. CF assemblies are reusable, which means that the desktop structure can make minimal effort to earn them. They will run okay unless you take any such issue where you can do something specific to the CE For example, using the message / window class, adding the C / C using SIP control, etc. If you use normal squares for both frameworks, then it will be fine.
3. Yes. You can not debug directly on the device (well, you should not be able to, but you can get it working manually by running the core core), but it will just go fine (assuming that CF Runtime anyways you have all the OS components needed to load).