OnBoard Windows CE Development

I have a HP Jornada 720 that uses Windows CE 3(called HPC 2000) here with me and now I want to play with onboard development on it, but I don't want shareware programs, such as Pocket开发者_如何学PythonC and NSBasic. What you suggest to me?

I'm interested on developing with BASIC and C/C++, but what I really want is to develop onboard my Jornada, don't matter the language.

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You could use CellularBASIC, it needs J2ME MIDP 2.0. I don't know if the Jornada 720 supports it.