I downloaded dbi and extracted it into c:\ruby-dbi-all. (I'm running 
Win2000.)

Following the instructions on http://ruby-dbi.sourceforge.net/, I ran:

ruby setup.rb config

This worked fine.  Then I ran:

ruby setup.rb setup

This got the following error:

__________________________________________
entering setup phase...
setting #! line to "#!c:/ruby/bin/ruby"
setting #! line to "#!c:/ruby/bin/ruby"
c:/ruby/bin/ruby extconf.rb
make
make: *** No targets specified and no makefile found. Stop.
setup failed
'system make' failed
try "ruby setup.rb --help" for usage
__________________________________________

Any suggestions?

Thanks,
Pete