Lukas,
This post is a general post and not necessarily directed to your specific
situation ( changing 'available logon hours' for your 250 users ). The
purpose of me posting the following information is so that when you have a
similar situation ( making the same change to multiple accounts ) you might
have a few more tools available to you....
In addition to what Chriss suggested, take a look at several other tools
that are available to you when doing this sort of thing ( making the same
change to multiple accounts ).
One such tool is a utility called ADModify written by two Microsoft
employees. It is a great tool and will really save you a lot of time and
headache. I believe that version 1.5 is the current version but version 2.0
will be coming out when they have it ready. You can download this awesome
tool at the following link:
ftp://ftp.microsoft.com/PSS/Tools/Exchange%20Support%20Tools/ADModify/
There are a couple of other native tools to WIN2000: ldifde and csvde.
ldifde makes use of .ldf files ( if you have every watched an Exchange 2000
/forestprep process then you have seen the ten .ldf files that are used )
and is very powerful. csvde is another tool that allows you to make use of
Excel spreadsheets. ldifde is my personal favorite but has a very
unforgiving syntax so it takes a little time to get that down.
There is also scripting - but that is more advanced....
HTH,
Cary