The hotfix was originally posted here
http://support.microsoft.com/?kbid=891518
It may also be known as Navision 4.0 Hotfix 4
But It is no longer available.
It is no longer available on https://mbs.microsoft.com
Our solutions provider does not have it; nor does microsoft.
If anyone has the original hotfix archive / executable and could share it - that would be greatly appreciated.
Thanks in advance.