how can I sync outlook sent emails between laptop and desktop?

Answer 1

I know of no good free way to do it.

If you want software try OsaSync
http://www.vaita.com/index.asp

EDIT: Found another program

Easy2Sync for outlook ( I'm assuming our'e using Office Outlook, not outlook express)
http://www.itsth.com/en/produkte/e2s4o_down.php