I'm almost there, Thomas. I did all that (I think, correctly) and a page appeared with the Commodore system information at the top and on the line below:
1>
It's been so long I've forgotten what to do in this situation or what problem is means.
I tried several commands but the only one that it accepted that I remembered was "endcli".
Any idea what I might have done wrong?
Oh, I did some research and found that normally typing loadwb will...load Workbench,
but in this situation when I type it I got a response "unknown command"
WinUAE does not remember settings automatically. You always have to go to the Configurations page and click on Save after you changed something. Also it only loads the default configuration. If you gave it another name you have to load it manually everytime you run WinUAE.
So what you have to do now, go to the ROMs page and select your ROM file again. Then go to the Harddrives page, click on Add Directory Or Archive and on Select Directory, then select the directory where the WB 3.1 files are in (not the .ROM file, but the C, Devs, Libs etc. directories).
After that go to the Configurations page, enter Default into the name field and click on Save. Only now click on Start.
From now on WinUAE will automatically load the config because it's called "Default". But whenever you change something, you have to go to the Configurations page and click on Save, otherwise the change will be removed when you quit WinUAE and run it again.