Is my GW linked to PlayNC (etc.)? How do I check?

I may have created a PlayNC account and linked it to my game account, but not 100% sure.

How can I check?

When I click on "Enter Store"... it asks me for a login (does that mean it's not linked?)

If I try to change my password... would that tell me whether it is linked to PlayNC or not?

I think this whole PlayNC thing is a BIG MESS (ANet has done a bad job on this one).

If it asks you for a login when you try to enter the store, then you are not linked to PlayNC yet.