Thank HillRider. That makes it a lot easier for me. I've been googling this stuff all day.

Ordered some lube last night. Believe it or not I've already cleaned a ton of gunk off it. A friend of ours had it for the last 3 years as we didnt have room for it. The guy is a bike enthusiast and looks after his own ones really well. Needless to say we're pretty insulted by the state he let it get into. I think he was using it to cycle to work in the winter. It was in pretty much new condition when she gave it to him and now half the parts are covered in rust and need replacing.