Lost all sms data but database seems to be in the folder

I own an HTC desire(android 2.3.5) and suddenly the phone rebooted, and after a minute, it rebooted again (I hadn't typed in the pin)... When I opened my sms app (handcent) I got no messages... I've searced in /data/data/com.handcent.nextsms and found a .db file of 6MB...so it must be my sms... What can I do to restore my sms?