Having problems updating to Rails 2.0 under Windows XP?

Seeing this error while trying to install Rails 2.0?

ERROR: While executing gem … (Zlib::BufError) buffer error

Run

gem update --system

first.

Then run

gem install rails -y --source http://gems.rubyonrails.org

and you're all set!

Yeah, I didn't know my RubyGems was that far out of date, either.