Might be a noob question, but i still want to ask

I am using ProgrammerDan's java miner on 2 PCs. I mine on aropool.com. Can i just mine using the same wallet address? I am using nearly the same config on both PCs, I just altered the worker name on PC No. 2.
Is it better to add a second receiving address to my wallet and use this address on PC2?

Thanks folks

Herr Vorragend