OK, I'm home, poorly and bored, so my friend has given me a copy of The Curse of Monkey Island cos I loved it years ago.
There are no instructions.
And I can't make it work! It's installed and everything, but I can't get Guybrush to interact with anything. I've tried left, right and double-clicking on everything but he'll walk towards things, but not do anything with them.
I am a total techno-tard. Please pity me. And help.