You mean you want to transfer your pictures from your eye-fi card to your Readynas without using photos II right?
All you need to do is follow the instructions on how to enable the FTP server for your Readynas(You might Need to sign up for some type of dynamic dns service if your ip address changes often) then in eye-fi center for the online option, select FTP and then enter the information from when you set up the FTP server(using the ip address assigned by your Internet provider). Once all the set up is complete u should be able to send pics to your nas. I set mine up to send pictures to my duo v1. Note that when you choose this method of transfer the pictures go from your card up to eye-fi's servers through the Internet, then back down to your nas through the Internet so the transfer speeds will be slower unless you have a really fast Internet connection.