Outlook 2003 Install Problem on Win2000

[tim]

I run Windows 2000
I have Service Pack 4 installed
I have installed all the Windows Updates
I have administrator access

Whenever I run the Outlook 2003 setup from the CD-ROM, I get as far as the window that asks me for my Product Key, but after typing in a few characters of my product key, the window closes and set-up ends

I cannot get any further

Any help would be greatly appreciated.

Thank you.