Site hacked, please help!

[chaldo]

So I woke up this morning, went on the forum and the site is hacked. When I go on a few sections it comes up: http://snpr.cm/cHoZhs.png Go on http://wghaven.com/forum and click on the sections. Most of them are hacked, some are not. The posts seems to be working fine. By the way can anyone help me get rid of the hacked msg? and if there are people that know how to secure a vb forum, msg me.

Thanks,
-Chaldo;)