Ah, the instructions I posted were to correct the problem when trying to create a Billing account or update that Billing account to provide payment information, if it had been created by activating a retail copy previously.
You have encountered a situation where the Billing account information at http://billing.microsoft.com for your profile was created with the wrong country and I don't know if that can be corrected by you. You should contact support to correct this.
How to reach support (FAQ) - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2421771&SiteID=2
On the other hand, picking up a retail box copy of OneCare will net you a PIN that can be used to renew your subscription. Just go to http://billing.microsoft.com, select the OneCare subscription, click renew, then use the option to use a Retail key, PIN or token to renew.
Renewal takes effect on the date that your current subscription expires and that it can take up to 24 hours for the subscription status to be updated in OneCare if you are renewing within 30 days of expiration and 5 days if renewal was performed between 90 and 30 days before expiration.
There's no need to reinstall OneCare unless you want to abandon the current account and activate with a different LiveID.
-steve
