Shoutbox

I have been trying to install the latest version of iTunes.
But, it says (Exactly):

iTunes could not be installed because Visual Basic Script (VBScript) is not installed or has been disabled. Make sure VBScript is installed, turn off script blocking in anti-virus and personal firewall software, re-register VBScript, and then install iTunes.

Whats does that mean..
And what do i do.
Please help