Updates:
after adding the nameservers as suggested by Ernesto, and then saving the file, the downloads still didnt happen, same error as before.
I then followed Sergio's suggestions and found that the datacentres's NS were still showing in the ifcfg-eth0 file, so i changed both the DNS to the values that should really reflect, and restarted the network service,
On running the command : /cat/etc/resolv.conf, the datacentres DNS have been commented out, (though i had it replaced, and the news ones showing up, however the downloads and updates of wordpress is still an issue with the same error as before..
Any suggestions???