Have a look at MS Knowledge Base article 295823. It sorted things out
for me

Graham



On Sun, 15 Oct 2006 18:16:02 -0700, TREY
<TREY@discussions.microsoft.com> wrote:

>When I try to remove or change Office 2003 I receive the message "The
>installation source for this product is not availavle." I also tried using
>the CD but it did not automatically launch and when I opened the files on the
>CD and tried the Setup I received the same message. How do correct this
>problem?