diff -urN pgadmin3/configure.ac pgadmin3.new/configure.ac
--- pgadmin3/configure.ac	2003-05-20 12:44:29.000000000 -0400
+++ pgadmin3.new/configure.ac	2003-05-20 12:44:44.000000000 -0400
@@ -7,6 +7,7 @@
 AC_CONFIG_HEADER([config.h])
 AC_CANONICAL_HOST
 AM_INIT_AUTOMAKE
+AC_PREFIX_DEFAULT([/usr/local/pgadmin3])
 
 # Checks for programs.
 AC_PROG_CC