Storing of User profiles

Hi,
WE are a college with our computer netowork.We have user
profiles enabled so that the computers can accept the
policy that was created for users, admins etc. Now what we
noticed is that the users profile directories are
cluttering up as many of the select yes to the question
"You have not logged on at this computer before.
Would you like this computer to retain your individual
settings for use when when you log on in the future."
This is quite a problem as we have over 600 users who log
on to these machines.
What I would like to know is if the answer to the above
question:
"You have not logged on at this computer before.
Would you like this computer to retain your individual
settings for use when ..."
can be by defautl set to know. Is there a way to do it
thru the registry or s or what ever.
Please help me solve my problem.