microsoft.public.windowsxp.security_admin

Hi,
We are just testing Active directory and domain controller setup for futue
use with 5 test PC's. These PC's were earlier used in network without domain
and local users were able to use all softwares. now when i converted them to
our test domian the domain users were not able to access programs properly
one of the test PC. When the domain user try to run MS Office (word) the word
tries to install some files on every occassion. if the user wants to explore
or shut down or any other work this screens nags him for atleast a minute
(Installationa and configuration etc).
can u explain why it is so? i have tried re installing MS Office XP using
administrator account (both local and domain) but the problem is there.

Pl help me to solve this problem.