Did u say just a FEW hacks
Go over to vBulletin, there is a thread there somewhere that tells you things to do to make your board more secure, like re-naming the admincp folder to another name and you can also make use of .htaccess files to require two logins for the admin area. You should also use .htaccess file to protect folders like the CGI-BIN. So cgi scripts cannot be run from there.