Wow! I've heard of people stuck on 1.5, but never 1.0, Dan. Version 2.0 has been out since November of 2007. My recommendation at this point is to look for a sale on OneCare - the version doesn't matter, you just need the retail key.
When your current subscription expires, uninstall it and run the cleanup tool -
http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=828910&SiteID=2
Then install OneCare from http://onecare.live.com
Activate with your LiveID (after your other subscription expires!) or create a new LiveID for this new subscription - http://account.live.com - and use the retail key from inside the box to activate your subscription.
-steve