Can anyone help me get this going

I've become root, apt-get installed ssh.
I assume at this point I have to start ssh or sshd on the N800 - but what exactly do I enter? I have tried sshd and ssh (without any options.

I've then installed putty.exe on my XP machine and connected to my N800s local IP address (192.168.1.4) on port 22
Putty asks "login as:" and I type root
Putty asks for password: If I type the wrong password I immediately get "access denied", but if I type the correct password then Putty just stops and I get nothing!

I am not sure what I am meant to get in Putty, but I want to control the N800 terminal from the Putty application on the XP machine. Any advice on what I am doing wrong.

Thanks!