Dartmouth pushes radical change in campus life   After a hard
look at student life on campus, the trustees and president of
Dartmouth College in Hanover, N.H., have decided it's time for
change. In a controversial move, they're targeting a more than
150-year-old way of life: the Greek house system.  Like many
colleges, Dartmouth is grappling with issues such as alcohol
abuse and gender relations. To that end, administrators last
month announced principles that will guide social and
residential life at the Ivy League school starting in the
1999-2000 school year:  *There should be greater choice and
continuity in residential living and improved residential space.
Recommended: Could you pass a US citizenship test?  *There
should be additional and improved social spaces controlled by
students.  *The system should be substantially coeducational and
provide opportunities for greater interaction among all
Dartmouth students.  *The abuse and unsafe use of alcohol should
be eliminated.  Alumni and students have react