I have my x51v and Audiovox smartphone setup with exchange server through 1 & 1.com service for around six bucks a month. (other companies provide same exact service so do your research and let me know if you find somewhere better). All my info is stored remotely so its safe and what's cool is as soon as I enter something in my phone (task, new contact etc) it immediately syncs with my desktop and PDA.
Darish
http://www.darish.com