BackgrounDRb & WinXP


I have problem with backgrounDRb.

First I installed plugin
    ruby script/plugin install

and then, when I try to run rails server I got an error.

The same error is when I try to generate a new worker.
   ruby script/generate worker Testing

Error: c:/ruby/lib/ruby/1.8/drb/unix.rb:5: UNIXServer is required

My system is winXp,
Is anybody has some experience in solving that problem?
Or maybe you now a different way to install that plugin?

It doesn't run on Windows. *nix only systems, hence the error.