So having read a lot on this in the last couple of days here are the steps I believe to create a cold wallet and to verify your private keys. Please correct me if I am wrong on this...
1. Generate a paper wallet by going to one of the two sites (do not use Safari)
Go offline, use a private window, generate a couple of pairs ( do not use the first set of pairs)
2. Write down the pair, close the window
3. Go to https://www.theworldexchange.net go offline
4. Enter your secret key, leave the account address blank click log-in
5. You can then verify that the pair you generated above is valid. I believe no xrp needs to be transferred for this check to occur
6. Once you have validated that the pair is valid you can then go and activate your wallet
Let me know if the above makes sense, thanks!