If they're on the same network, just run the wallet (daemon) on one of them, and point the cpuminer from the OP on the other computers to the one with the daemon running.

Imagine that the PC running the daemon has the ip 192.168.1.1, then run "minerd -a qubit -o http://192.168.1.1:7799 -u someusername -p somepassword" on the other PCs. The "someusername" and "somepassword" depend on the value in the QubitCoin.conf file. On Linux, it's in ~/.QubitCoin/QubitCoin.conf, on Windows, it's in C:\Users\\%AppData%\Roaming\QubitCoin\QubitCoin.conf.

Just remember that the PCs must be on the same network, so they can see each other.


Btw. There's really no point in doing this, you can let each computer have its own wallet and then just send the coins from time to time. Because if the PC with the wallet fails, the workers lose their job