The install should be as simple as dropping into dos, cd to your Ruby folder and run the command: gem install watir

Unfortunately it wasn’t that simple for me, we work via a proxy here so I had to tell the gem utility about it.

Running gem install when you are behind a proxy

Set the HTTP_PROXY environment variable.

Example: set HTTP_PROXY=http://mycache:8080

You can now run: gem install watir

Or you can pass the proxy information as a parameter to gem via the -p switch:

gem install watir -p http://mycache:8080

Gem will now go off download and install the latest Watir package, version 1.4.1 in my case. Be patient this can take some time depending on server load.