Rolling Back to CS4 Design Premium

Hi,

I am trying to reinstall my 2 Disc Version of CS4 Design Premium but I keep on getting a blank Installer Alert when I'm on disc one, it installs unto ¾ of the progress bar but then the blank box shows up with nothing other then Installer Alert in the title bar. Having searched I see this is a common problem - however none of the solutions have worked out for me yet.

Have found one that say to download the CS4 suite and install from the downloads

I've visited this link

Download Adobe Creative Suite 4 (CS4) products

But it won't proceed to download anything.

I have a full retail version of CS4 DP (it's not a student version either)

A bit stuck, any ideas?

Many thanks