Do it this way, you want your most reliable rig to host the wallet so say if you are going to mine feathercoin just as an example I do mine this way.
I hope your on windows or I am probably wasting my time but here goes.
Main rig with the wallet mining feather is pointed at 127.0.0.1:9337
I start feathercoin-qt.exe with the -server command by putting a .bat file in the same folder as the qt.exe and then the text inside that .bat file is "feathercoin-qt.exe -server" without the quotes.
Now on the rig with the wallet you will want to go to C:\Users\YourName\AppData\Roaming\Feathercoin and create feathercoin.conf. Inside feathercoin.conf looks like this for me.
rpcuser=username
rpcpassword=password
server=1
daemon=1
port=9336
rpcport=9337
rpcallowip=53.38.15.*
rpcallowip=127.0.0.1
Where mine says 53.38.15 most peoples are 192.168 etc those are just important numbers to me for one reason or another.
Last thing you gotta do is give your main rig a static ip with your router (meaning it does not change), start your feathercoin wallet and let it download the whole block chain until it is in sync and then you can point your miner at it. Then go to your other 3 miners and point them at 53.38.15.Whatever static number you decide, port 9337 with a username and password that matches your feathercoin.conf and you have your own little network of miners going.
I'm sorry I am not better at tutorials but I hope this will help you get where you need to be, if you need help giving your main rig a static ip, let me know and I will tell you how. Good luck.