Capistrano in InstaRails bombs?

Following the book, I try:
cap --apply-to C:\CapPlanner\trunk\Source capplanner
And get in reply:
C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1443:in `complete':
invalid option: --apply-to (OptionParser::InvalidOption)
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1441:in
`catch'
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1441:in
`complete'
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1254:in
`parse_in_order'
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1247:in
`catch'
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1247:in
`parse_in_order'
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1241:in
`order!'
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1332:in
`permute!'
        from C:/InstantRails/ruby/lib/ruby/1.8/optparse.rb:1353:in
`parse!'
        from C:/InstantRails/ruby/lib/ruby/gems/1.8/gems/
capistrano-2.1.0/lib/capistrano/cli/options.rb:117:in `parse_options!'
        from C:/InstantRails/ruby/lib/ruby/gems/1.8/gems/
capistrano-2.1.0/lib/capistrano/cli/options.rb:15:in `parse'
        from C:/InstantRails/ruby/lib/ruby/gems/1.8/gems/
capistrano-2.1.0/lib/capistrano/cli/execute.rb:14:in `execute'
        from C:/InstantRails/ruby/lib/ruby/gems/1.8/gems/
capistrano-2.1.0/bin/cap:4
        from C:/InstantRails/ruby/bin/cap:16:in `load'
        from C:/InstantRails/ruby/bin/cap:16

I can replace the \'s in the path with /'s, or the whole thing with
'.'. It does not matter.

I installed fastthread (1.0-mswin32) as suggested.
ruby -v 1.8.6
cap -V 2.1.0
InstaRails 1.7

Turns out Capistrano has updated, and v 2.x is way different than the
Agile book assumes. Can anyone out there tell me what should be done
to get things in a state that I can follow along?