When a PuTTy Configuration window opens select
Session (it should be selected by default) from the
Category panel on the left.
In the Host Name (or IP address)
field enter the name of the computer you wish to connect to.
Make sure that SSH
is selected under Protocol
(it should be selected by default).
Click on Open.
In the new dialog box enter your username and password.
Once you see the prompt, you are connected to the remote computer.