Hiya,
The way to do this would be to make local accounts on the server for each different country and then log in as that country and change the regional settings. For example create a local user called USA and log in as USA and change the regional setting to USA regional settings and tell all the people that are in the USA to log in as USA and the date format and money format will be there waiting for them.
Hope that helps
Jamal from
www.lucidica.com