I posted my issue regarding the subject above and I got responses from two people and thank you for that.

I managed to download the correct version for the centos 6.3 DVD2.iso but my problem when im asked to put disc 2 it will generate the following error:

"An unhandled exception has occurred. This is most likely a bug. Please save a copy of the detailed exception and file a bug report"

What could be the problem now.

Rgds,