Okay, I'm back again. Quoting myself from above:
The connection is only one way but luckily it's the way that I need it, which is connecting to the PC from the Mac. Trying the other way, from the PC to Mac, I get an "Enter Network Password" message. Nothing I do works for me in this instance. I have no clue whatsoever what my network password is! I'm not too worried as I have what I want. Would still like to know though.
I've now decided that I
do wish to connect to the Mac from the Win7 machine and nothing works for me. I'm convinced this
is an issue with this version of Win 7 trying to connect to machines other than another Win 7 using a homegroup.
I've tried using another account that exists on both machines with identical passwords.
I've tried toggling Password Protected Sharing, that makes no difference.
The Firewall is turned off completely when connected to the Mac.
I even wondered if the machine thought I was trying to connect wirelessly (which I'm not) and so entered my hub key details! No deal.
The only passwords on the Mac are the login ones, no passwords related to networking that I'm aware of.
If I'm stuffed on this one then so be it.
