Okey smokey, I'm a teensy bit stuck right now.

First, I'm having trouble finding the key to the shed out back. When I used the sense command, it showed me a desk with a red book and an electronic device. Now, I'm fairly certain I checked every desk with a computerish machine on it a gazillion times, but I guess not.

Second, I have no idea where the nine ball for the billiard table is. I already found the three ball in mum & dad's secret room, and whenever I use my sense command on the table, it just shows me a picture of the pool out back where the tire tracks lead into.

Third, what's the painting I found on the sofa in that one lounge for?

Thanks in advance... cheers!