Support should reply withing 24 hours of your email support submission. If Jim's advice does not resolve the issue and you have not heard from support:
Unofficial path - send me an email at sboots@mvps.org with a subject line including "OneCare" (to get past my spam filtering) and in the message body, tell me what country you are in, your forum nickname, and paste this link:
http://social.microsoft.com/Forums/en-US/onecareinstallandactivate/thread/0af00753-5f49-4076-99ca-3b8669dc9802I am not online 24x7, so you may be waiting for a reply, but I'll do my best to hook you up with support.
If you don't get an email response from me wthin 24 hours, post back as my email provider is getting more aggressive with the spam filtering.
-steve
Microsoft MVP Windows Live / Windows Live OneCare & Live Mesh Forum Moderator