You have to create it in the Nautiluscoin folder. Create a new .txt file called nautiluscoin.txt, paste the nodes previously posted into it, close it and rename it nautiluscoin.conf. Then you can open the wallet and it should sync just fine. If not, remove everything except for the wallet.dat and the new nautiluscoin.conf from the folder and start the wallet again. It will download the entire blockchain again, so wait a couple of minutes until it catches up and it should work.