Just like any other coin's conf you just have to use a different rpcport.
Ok ty - does anyone know the current vertcoin rpcport? Is it 9332?
There are no fixed rpcports for different coins, it doesn't matter which one you use as long as it's the same port you set your miner to try to connect to.
VERTCOIN INFO--
I pulled some stuff off of CoinWarz.com:
P2P Port RPC Port Blocks Network Hashrate Vertcoin Difficulty
5889 5888 348,052 6.82 GH/s 207.5611
The ports changed from the earlier scrypt-N days (9332). I don't really know if the ports above are for Lyra2RE, or Lyra2v2.
I suggest looking at Vertcoin on the CoinWarz site, and clicking on the Vertcoin icon when you find it in the list. That will take you to a detailed info page, and you can navigate from there to a profit calculator web-app just for Vertcoin. Should be what you need. --scryptr