Sorry for the incomplete message. Here it is.
When I try to install mongrel via gem on my Windows system, I get the following options. Which one should I choose (1…4) and where can I get details about each of these options?
$ gem install mongrel --include-dependencies
Select which gem to install for your platform (i386-cygwin)
mongrel 1.0.1 (mswin32)
mongrel 1.0.1 (ruby)
mongrel 1.0 (mswin32)
mongrel 1.0 (ruby)
Skip this gem
select 1 for the latest mongrel running on windows binaries.