[support] Best practice to major site change?

Drupal 6.19 OG6x-1.4 Up until this semester, I needed this student portal site for one school only. Now I need another portal for different school. Before: http://mysite.com Change needed to Login page > http://mysite.com/school1 http://mysite.com/school2 They don't need to share anything but the server space and the domain name. What would be the best practice for this situation? While school2 is still blank, I have too many things under school1 including menus. It won't be practical to modify them one by one, and seeking for a better solution. -- - Hiro Hiroaki Honshuku, A-NO-NE Music, Greater Boston http://a-no-ne.com http://anonemusic.com