PuTTY is a free ssh client that runs under Windows; you can use it to connect to CS as follows:

Go to the PuTTY web site at http://www.chiark.greenend.org.uk/~sgtatham/putty/.
Click on Download.
In the list of programs available for download, click on the first one (putty.exe). Choose Open instead of Save. This will run PuTTY. (NOTE: If you plan to use PuTTY often you can save it to your computer. For use in labs you would want to save it to your Z drive.)
When the PuTTY window comes up, type cs.roanoke.edu in the Hostname box, be sure SSH is selected as the protocol, and then click Open. You should get a login prompt for CS (it usually says "login as").
Log in to CS as usual. (You may get some questions about whether or not you trust the host computer - type yes.)
NOTE: This probably won't happen but after logging in you may need to set your terminal type by typing the following to the prompt:
```
  export TERM=vt100
```
You are now in a shell on CS and can execute the usual shell commands. You can also run emacs, but it will come up in this same window. Lab 4 gives you the basic instructions for using emacs through PuTTY and the page at Indiana University is a good reference for the emacs keystroke commands.