As I said, probably a newbie mistake! Will try that.
As for the samba thing, various articles around the web mentioned it. For example this
talks about Samba in the introduction then explains logging in with PuTTY, so I assumed both were needed.
EDIT: 15 seconds later and I'm connected just fine. Doh!
How would I connect from somewhere outside my network though? I just used the 192.168.x.x IP, As far as I'm aware my actual IP address is for my internet connection and not a specific machine, so how would I tell it what machine to connect to... if that makes sense? :P