Moving VB sites to another server
 

I moved a lot of sites off of one server to another server only difference in the two are hardware, software remains the same. Now the problem I have is none of these Vbulletin sites work anymore with PHP 5.3.2. They all output

Deprecated: Assigning the return value of new by reference is deprecated in

or

Headers already sent

I have several Vbulletin sites on the server so I couldn't go to each and everyone to make changes to the code just so they work. My software, CentOS5.5/Apache 2.2/PhP 5.2.13/MySQL 5.0.90. I want to use 5.3.2 but it won't work with this version or 5.3.1. Some have mods some do not have mods but doesn't seem to matter even one without any modifications on it still shows errors. So how would I go about tackling this?