Sorry, my connection is fine at the moment. I'm just worried they'll somehow mess up with the new line? I wouldn't of imagine it would have been a difficult procedure, but my luck is 0 and everything usually goes wrong for me.

What 'SHOULD' the engineer do?. I'll give you an idea whats where. My main phone line is downstairs in the living room. Upstairs i have my router in the spare bedroom where there is another phone line. This is where the router is plugged into and Sky in my room.
The new SKy+ box is being fitted in another bedroom upstairs and will obviously need to go into a phone line? I presumed it would be as simple as plugging the phone line into the back of the box, trailing it to one of the sockets (upstairs or down) and plugging it in using one of the filters where you can connect 3 things into.
Because either eitherup or down there will need to be a phone line, sky line and router.
I take it i'm wrong and it's far more complicated?