Step 1: Clicky: http://www.kongregate.com/kreds
Step 2: Clicky that button
Step 3: chose your method of payment/voluntary service.
Step 4: (Because I haven't gone this far, it's just a guestimate) Fill out any required information and confirm.
Step 5: Enjoy your Kreds and new found PR2 items
(As of now, the Vault Of Magics isn't yet open, so please do not complain that it is not working, Jiggmin is still undergoing testing and such to make sure it runs smoothly)