connect subdomain to database and do other key points

I moved to another server and I dont understand why my subdomains stopped working , all server configuration are perfect. +the above should be no 1 priority, the to fix the conection then, +fix the facebook like if i click i . +Registered members are more than 1,000 but showing 1,000 +Quiz promo. +integrate all other forms of [login to view URL] to work, because presently I use the G adsense for banners alone +install tool bar like meebo verify or fix my send mail manager and check please if you are not 100% good in php to fix these please dont waste my time