Just to do it right.

I just have to download the new wallet and add the nodes, that's all?

Far from a newb when it comes to mining and technology in general but I've never done a conf file. I thought I did it right but get a run time error. Care to lend a hand?
Close you OctoCoin wallet
Go to %AppData%/Roaming/OctoCoin and:
1 - backup your wallet.dat
2 - Delete everything except wallet.dat
3 - Create your octocoin.conf file and add
listen=1
server=1
daemon=1
rpcuser=user
rpcpassword=xxx
rpcport=22888
addnode=162.243.144.135
addnode=162.243.149.125
addnode=162.243.207.204
addnode=162.243.141.242
4 - Save the octocoin.conf to %AppData%/Roaming/OctoCoin
Relaunch the wallet. If you get in an error, close it out and make sure the process is closed, then relaunch it.