Chessbase.com's Pocket Fritz
(first or second edition
) will work in H/PC 2000 with aygshell.dll, the Pocket PC version of mfcce300.dll, and doclist.dll added. Richard Lang's Chess Genius should also work with just aygshell.dll added.
(Put those in the same folder with the chess program, not in \Windows.
) The DLLs can be found on cmonex' site:
http://www.hpcmonex.net/izemize.htm
If you're not familiar with using these DLLs, isotherm's RedGear can do the work for you:
http://www.alpaxo.com/