Open up notepad, paste all relevant lines you need, such as addnode (you can make as many addnode lines as you need)

addnode format (where the X's are the numbers of the IP address):

addnode=X.X.X.X

Once done with the file, save it as as a .conf file (change the dropdown from .txt to 'all files' to do this), make sure the file name is PieCoin.conf.

Place the file in your PieCoin data directory, its usually something like this:

C:\Users\\AppData\Roaming\PieCoin

You will need to enable seeing hidden files and folders to see the AppData directory

Hope that helps!