Database Problem?

[محروم.كوم]

In this quote is what I get as a Database Error, what can we do to fix this?
Quote:
Database error in vBulletin 3.7.3:

Invalid SQL:
SELECT COUNT(postid) AS posts, COUNT(threadid) AS threads FROM vb_post;

MySQL Error : Table './tonycomi_forum/vb_post' is marked as crashed and should be repaired
Error Number : 145
Request Date : Monday, June 7th 2010 @ 1024 PM
Error Date : Monday, June 7th 2010 @ 1024 PM
Script : http://www.tonycomix.com/forum/login.php?do=login
Referrer : http://www.tonycomix.com/forum/admincp/index.php

IP Address : 207.13.63.224
Username : TonyComix
Classname : vB_Database
MySQL Version : 5.1.30

I tried to back up my database and this occured, this was a few days ago. __DEFINE_LIKE_SHARE__