Lost Access to System

Hi there,

I have my ReadyNAS set up with a different SSH port and access only via an SSH key as I was using it with a dynamicDNS server to stream music to my mobile and for me to access my network from my phone. This has been sweet for over a year now. I recently upgraded to Windows 8 and in the upgrade process forgot to backup my private key before doing a clean install. (Really dumb move I know) I also have a private key on my mobile but I recently did a factory reset on my phone and the private key I had backed up on my phone just won't work now with ConnectBot on Android. I used frontview to reload EnableRootSSH but this hasn't made any difference. When I connect with Putty I get the message "Disconnected: No support authentication methods available (server sent: publickey)". I have my mobile private key backed up but when I try to import it into Puttygen I now get "Couldn't load private key (unrecognised key type)"

So I have two avenues...does anyone know how I can get in without a publickey (I dont' think this is possible)
or...can someone give me an idea how to take my private key and convert it into a .ppk file I can use with Putty or into an OpenSSH or RSA format that maybe puttygen will import.

Thanks.
Bradley.