Well, if you want, and can wait, Used Handhelds will be acquiring MobilePro 900cs sometime this month. But, the 900c runs CE.net 4.2 and the 900 runs HPC2000.. cmonex and some other people were able to flash HPC2K on 900c, etc.. http://www.hpcfactor.com/forums/forums/thread-view.asp?tid=6058&posts=13&start=1
Hope this helps..