u can use "91mobile"
download here
website
http://sj.91.com
a very very good softw form china ,can b used to download & install softw ,b/u contacts, calendar, notes, tasks , check ur phone's sysinfo , edit reg ,send sms ,wallpaper ,theme,sound,rss,…………………… ect.
xp user must install
Microsoft .NET Framework & activesync first
oh~may b u should learn chinese first :P