HI!
Did you signed in with the WIndows live id that is associated with your subscription? You do not need to re-subscribe, you just need to associate it with the live id that you have used when you subscribed to Windows Live Onecare.
Open Windows Live onecare, Click on the subscribe button, If asked if you have a Live ID, just click on YES and Next, then sign in with the Live Id that you used when you subscribed to Onecare, click on sign in. then just follow the onscreen instructions.
Keep me posted.
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bayabasgirl29