Dezinerfolio

I uploaded everything onto my server, and run the index.php file. I've got green lights across the board with the exception of one required extension, JSON. It says it is disabled. I get this error:

Warning: dl() [function.dl]: Unable to load dynamic library '/usr/lib64/php/modules/json.so' - /usr/lib64/php/modules/json.so: cannot open shared object file: No such file or directory in /public_html/DoSP/_flash/gallery/install.php on line 40

I'm a relative newbie at this stuff, so any direction on getting the JSON extension in place would be greatly appreciated.