backgrounDRB & Cygwin?

Hello, I'm trying to use BackgrounDRB on InstantRails v1.7 (Ruby 1.8.6 and Rails 2.1.0) with Windows Server 2003. I know that I can't use BackgrounDRB on a Windows machine because it uses forking - thats why I installed Cygwin. However, when I attempt to start backgrounDRB, it tells me it is still missing Fork. I just used the GUI installer to install Cygwin... Any ideas as to why this isn't working?

Any and all help is appreciated!

Thanks, - Jeff Miller