Q2: Can old machines be used to pool mine bipcoin? I am going to try to use an old 2Ghz system with 3GB RAM running a single core AMD 64 bit CPU. It's pretty snappy with Ubuntu 14.04 but that CPU is quite old. Tho mobo in that system has an integrated GPU, so if the wolf miner will work on that system it might produce a better hash rate than a CPU miner would.
Don't bother. To say the result will be disappointing is an understatement. Even core 2 chips are not worth it, as is the case too with anything older than sandy bridge.
Also, cryptonight GPU mining is not that much more efficient than cpu, even for dedicated cards, which is why such coins are a favorite among cpu miners. I doubt that integrated gpu will even work for mining.