It'll work if you do one of two things with the 900:
1
) upgrade it to a 900C by reflashing it with the 900C Windows CE 4.2 .net ROM image
(
http://www.hpcfactor.com/support/update/aggregator.asp?cid=5 ); or
2
) leave it as an 900
(H/PC 2000
) and install Alpaxo Software's RedGear on it
(
http://www.alpaxo.com/ ).
The former is free, but you have to follow the instructions carefully. The latter costs $20 but is much easier and works quite nicely.