Java SE (Java Platform, Standard Edition)

When I try and download and install the normal java download this message stops first by saying "this software is already installed do you want to reinstall it" when I say yes this Windows Installer error message shows up
"The feature you are trying to use is on a network resource that is unavailable.

Click OK to try again, or enter an alternate path to a folder containing the installation package 'jre 1.6.0_19-c.msi' in the box below. "

I need help just getting it downloaded please help.

ps
I had my antivirsus disabled as well as the firewall so I don't know what else to do