prpr,
Thank you - that page was exactly the one I used to guide me through how to use PuTTY and Telnet. It was clear and looking at it again I see that it the first sentence there is the one that you quote above. So my apologies - the note I was asking for is already there. I was simply trying to give feedback to help other people that could be as confused as I was, but it turns out that I hadn't understood what was there all the time.
Fixdisk is still running on my Humax and hasn't changed since my previous post, so fingers crossed that it will work.