I have been using Palm PDA and am considering to switch to pocket PC.
With Palm I have a nice Chinese software (CJKOS), I'm able to input
Chinese characters and read Chinese. With Windows XP, I'm able to
input and read Chinese characters (Windows XP has this function built
in). But I
would like to know if I can do it with pocket PC? and how? Thanks.

I found a few things that may work for you.
http://www.mobem.com/ has something called CE-star. looks like it has
a handwriting recognition too, which CJKOS lacks (I use CJKOS too).

http://www.handango.com/PlatformProductDetail.jsp?productType=2&optionId=1_2_2&jid=FBA1BD5D4X4D9X79EFCAD16FD2864D4E&platformId=2&siteId=1&productId=85472&sectionId=0&catalog=30&txtSearch=knife
"pocketknife" seems generically ok, but, well....if someone can't
spell pinyin right on their website, I've gotta doubt their product a
little bit.

http://www.handango.com/SoftwareCatalog.jsp?siteId=1&jid=82X24A8D1DD21EB3743C39CXF45D7B61&platformId=2&N=96806&Ntk=All&Ntt=CJreader&refine=1
CJreader might work if you just wanted to read instead of write. Hope this helps.

Follow these instructions:

http://www.qwikly.com/faq.html#How_can_I_get_all_those_neat_fonts