I am currently doing nanopool with my main rig. Followed this guide. https://www.cryptocompare.com/mining/guides/how-to-mine-ethereum/
I used the address that created on Geth on my .bat file to run Ethereum 0.9.4.
It looks like this : "C:\Program Files\Ethereum 0.9.41\Release\ethminer.exe" -F http://eth1.nanopool.org:8888/0x10d3c037926aba4738ae239fe648a7a3d4751810
I have a second PC which I want to mine also but how to I setup Geth to use my current address instead of making a new one?