If your trying this on our board,
www.shinraonline.com - it wont work unless your a moderator or administrator.
If this is your board, then you should check the syntax you entered into the postbit template and ensure all refrences in the hack and in the template show the correct field for the custom field.
Catch me on aim later tommorrow (TheTomBlack) if you still having trouble implementing this and I will walk you through it.