Unable to start webrick server with jruby script\server

Hi,

I tried to run webrick server on jruby, but getting the following error.
if anybody have answer, I would be greatful

My environment is:

rails 1.2.3
ruby 1.8.5
jruby 1.0.1
jdk1.4.2_12

C:/Java/jruby-1.0.1/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:498:in
require': File not found (Errno::ENOENT) from C:/Java/jruby-1.0.1/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands /server.rb:40 from C:/Java/jruby-1.0.1/lib/ruby/site_ruby/1.8/rubygems/custom_require. rb:27:inrequire’
from
C:/Java/jruby-1.0.1/lib/ruby/site_ruby/1.8/rubygems/custom_require.
rb:27:in `require’
from :1

thx
siva