[Blue-Inc]

I did go to the support center provided by this forum. But Il post my problem.
I get this error below trying to view the arcade (blue-inc.org/arcade.php)

Database error in vBulletin 3.5.4:
Invalid SQL:
SELECT arcade_challenges.*, touser.username AS tousername, fromuser.username AS fromusername, arcade_games.miniimage, arcade_games.title FROM arcade_challenges AS arcade_challenges
LEFT JOIN user AS touser ON (touser.userid=arcade_challenges.touserid)
LEFT JOIN user AS fromuser ON (fromuser.userid=arcade_challenges.fromuserid)
LEFT JOIN arcade_games AS arcade_games ON (arcade_games.gameid=arcade_challenges.gameid)
WHERE status=3 ORDER BY datestamp DESC LIMIT 10;
MySQL Error : Table 'blueinc_vb.arcade_challenges' doesn't exist
Error Number : 1146
Date : Monday, April 3rd 2006 @ 11:49:26 AM
Script : http://www.blue-inc.org/arcade.php
http://www.blue-inc.org/index.php
IP Address : xxxxx :tear: not telling you this.
Username : echo_unlimited
Classname : vb_database

Also I get these errors while veiwing a thread:

Database error in vBulletin 3.5.4:
Invalid SQL:
SELECT title,highscorerid,highscore,miniimage,gameid FROM arcade_games WHERE highscorerid IS NOT NULL AND (gamepermissions & 2);
MySQL Error : Table 'blueinc_vb.arcade_games' doesn't exist
Error Number : 1146
Date : Monday, April 3rd 2006 @ 03:39:27 PM
Script : http://www.blue-inc.org/showthread.php?p=519#post519
Referrer : http://www.blue-inc.org/index.php
IP Address : ---------
Username : echo_unlimited
Classname : vb_database

And while when I go into ACP>>Arcade>> Catagorys:

Database error in vBulletin 3.5.4:
Invalid SQL:
SELECT * FROM arcade_categories AS arcade_categories ORDER BY displayorder ASC;
MySQL Error : Table 'blueinc_vb.arcade_categories' doesn't exist
Error Number : 1146
Date : Monday, April 3rd 2006 @ 03:40:41 PM
Script : http://www.blue-inc.org/admincp/arca...?do=categories
Referrer : http://www.blue-inc.org/admincp/index.php?do=nav
IP Address :-------------
Username : echo_unlimited
Classname : vb_database

ACP>>Arcade>>Games:

Database error in vBulletin 3.5.4:
Invalid SQL:
SELECT COUNT(*) AS total
FROM arcade_games AS arcade_games;
MySQL Error : Table 'blueinc_vb.arcade_games' doesn't exist
Error Number : 1146
Date : Monday, April 3rd 2006 @ 03:41:23 PM
Script : http://www.blue-inc.org/admincp/arca...n.php?do=games
Referrer : http://www.blue-inc.org/admincp/index.php
IP Address : -------------
Username : echo_unlimited
Classname : vb_database

Thats all the errors I get, plus its affecting my forum


How would I fix these? I done some thing to my site and i don't know how to fix these errors.